A simple switch for computer consoles on a transistor and relay (KVM Switch). Full Control - KVM over IP Switches Model Description Edimax EK-PAK3

KVM over IP - what is it?

KVM(or kvm over ip) is a device that allows video signal and mouse / keyboard input to be transmitted over a network using an IP protocol from your server. With KVM, you can reboot the server, access the server BIOS and other functions that cannot be performed on the server through the terminal. You can activate KVM access for free on the service page.

KVM is free for the first two hours of the day. The fee for the subsequent KVM connection is 30 minutes - 300 rubles.

How do I connect KVM to a server?

Ready! You will get KVM access to the server for the selected period of time (up to 2 hours). Within 15-20 minutes, access will be sent to the contact e-mail.

KVM doesn't work

Work through utilities

When working through utilities, there is no need to configure Java.
To manage KVM, Windows users can use the following utilities:

  • CN8000 WinClient
  • - for KVM from ATEN manufacturer;
  • - for KVM from ATEN manufacturer;
  • KVM Vision Viewer - for KVM from other manufacturers.

Working in the browser

To work with KVM, the browser must support Java. Opera and Chrome browsers (starting from Cromium 42) and Firefox Standard (versions above 52) no longer support Java. Of the browsers being updated, Java support is available in Firefox ESR (up to March 2018).

The web interface for KVM CN8000A models is guaranteed only in browsers based on the Gecko engine (for example, FireFox). Webkit (Chromium and based on it) may experience display issues. In this case, we recommend using Windows or Java clients.

If the KVM console has a black screen, the inscription "No Signal"

In case of prolonged inactivity, the screen will be turned off (“No Signal” will appear), to resume, you must press any key in the console (we recommend pressing “Alt” or “Ctrl” instead of “Enter” to avoid executing the command typed in the console earlier).

Keyboard not working in KVM console

Try resetting your KVM device. To do this, log in to the KVM web interface, go to the "Maintenance" section and reset. Usually this item is called "Unit Reset", "Reset USB". 2 minutes after the reset, check the keyboard operation in KVM.

What to do if KVM window in Java does not open

If the KVM window does not open for a long time, check if Java is installed on your PC. Go to the official Java website, then click on the link “Is there Java software installed on my computer? ". If Java is installed, follow the instructions below.

If Java version 8 is installed

To start the KVM console, you need to complete three steps:

  1. 1.

    Make changes to the file java.security... The file is located at JDK_HOME / jre / lib / security / java.security, usually these are the paths:

    for Windows OS:
    C: \ Program Files \ Java \ jre1.8.0_91 \ lib \ security for 64-bit versions of JAVA, or
    C: \ Program Files (x86) \ Java \ jre1.8.0_91 \ lib \ security for 32-bit versions.

    for Linux OS:
    /usr/lib/jvm/java-7-openjdk-amd64/jre/lib/security/java.security
    or you can find the file with the command in Linux consoles:
    find / usr / lib / -name java.security

    In this file, you need to comment out the line that begins with:

    jdk.certpath.disabledAlgorithms
    those. add the "#" character at the beginning of the line, for example:
    # jdk.certpath.disabledAlgorithms = MD2, RSA keySize

    Note that to edit the file java.security need to run text editor as administrator (for Windows) or superuser root (for Linux).


In case the problem persists, try installing Java 7 and setting the security level to Medium (see above).

If the above methods did not help you and any error messages appear when opening the KVM window, you should refer to the official JAVA manual on the developer's website: http://java.com/ru/download/help/

Try using Windows OS and a browser as a solution Internet Explorer version 9.
It is also possible to work in Linux systems x32 when using Firefox and Java 7.
Additionally, you can use the emulation mode of old browsers in Internet browser Explorer 11 (accessible by pressing F12).

What to do if a Java KVM window opens from the browser, but there is an error in the status bar?

Information about messages about blocking Java in the browser is posted here.

What is IPMI and why is it needed?

IPMI- interface for remote control server. It is designed for autonomous monitoring and control of functions built into the server hardware.

IPMI works independently of the operating system on the server. Therefore, if the processor / BIOS / operating system encounters problems, you can reboot the server, restore critical management, logging and inventory functions via IPMI. You can read more about IPMI on the thematic forums.

Accessing the IPMI interface

If you have a problem with displaying the console and IPMI accessibility, use the instruction:. In case of difficulties, write.

Installing the operating system using IPMI

You can install the operating system yourself using IPMI. The IPMI interface allows you to remotely install the OS and mount the image file as a virtual DVD-ROM on the server.

The following images are available for booting into IPMI:

  • Centos 6, 7;
  • Debian 8, 9;
  • Ubuntu 14, 16, 18;
  • ESXI 6.5, 6.7;
  • SystemRescueCd 5.3.2.

If you need to download another image, write with a link to the image.

To install the operating system, follow the steps:

  1. 3.

    On the Manage tab, click IPMI console:

  2. 4.

    On the first transition confirm launch:

    • in the first pop-up window, check the box next to "Always trust content from this publisher" and click Run:
    • in the second pop-up window, click the button Yes:
  3. 5.

    In the "Web IPMI" window, select Virtual media — Virtual storage:

  4. 6.

    In the "Logical Drive Type" field, select the type of image ISO File, in the "Image File Name and Full Path" field, select the file with the distribution kit (any .iso file), click Plug in, Further OK:

  5. 7.

    Reboot the server in the console window Macro — Macro — Ctrl + Alt + Del:

  6. 8.

    After that, the "Virtual DVD" device will appear in the server BIOS, which can be set first in the order of loading disks ( Boot priority):

  7. 9.

    Save changes by selecting "Save changes and exit" in the "Exit" menu:

  8. 10.

    Boot from the virtual DVD and install the operating system.

If you have a problem with displaying the console and IPMI accessibility, use the instruction:. If you have any difficulties, write.

It's important to know

The IPMI controller forwards to motherboard virtual DVD-ROM and USB keyboard control, so you cannot turn off support for USB devices in the BIOS or OS.

What if IPMI doesn't work?

Ways to solve IPMI console display problems (for example, black screen):

    Press any key on the keyboard (for example, Shift). If the keyboard does not work, use the virtual keyboard.

    For a server with an operating room Ubuntu system- press the keyboard shortcut Ctrl + Alt + F1.

    Restart IPMI (cold reset) by connecting to the server via SSH as root and issue the command: ipmicfg -r or ipmitool bmc reset cold.

The ipmitool utility requires some kernel modules, you can enable them with a command in the server console as the root user: modprobe ipmi_si && modprobe ipmi_devintf && modprobe ipmi_msghandler.

  • For a server with an operating room Windows system Server - connect under the Administrator user and in the command line enter the command: ipmicfg-win.exe -r.

If the above methods did not fix the problem, follow these steps:


Connection failed error

Reset IPMI. For this:


Keyboard does not work


If the IPMI console still does not respond to keyboard presses, use the virtual keyboard.

From the Virtual Media menu, select Virtual Keyboard:

To return to managing the physical keyboard in the IPMI console, in the Options menu, select Keyboard Mouse Hotplug:

If you want to hide the virtual keyboard, in the "Exit" menu, select the item Exit:

Then close the IPMI console and reopen it. Rebooting IPMI can take up to five minutes.

If you have any difficulties, write.

This is a device that commutes a large set of devices between two personal computers... Initially, models could only transmit signals from a monitor and keyboard to mouse. Then there were switches with the ability to process audio. Modern models are produced with support for CEC protocols. All this makes it possible to avoid many mistakes. They arise due to the fact that the switch is not able to respond to system requests to disconnect devices.

The main parameters of the models include bandwidth and synchronization frequency. Also, the manufacturer must indicate the number of ports on the panel. The minimum allowable temperature of the switches is around -15 degrees. In order to understand more about the devices, you should consider the principle of operation of the models.

Device and principle of operation

Each USB 2 Computer KVM Switch has two parts. First of all, it is important to note the microprocessor unit. The specified element interacts with the keyboard as well as the mouse. This is due to the transmission of signals from the capacitors. Also, the microprocessor unit is responsible for emulation. A fuse is installed to protect the system.

The second element is the video switch. It consists of a thyristor unit and a set of resistors. Data is exchanged using short pulses. All this allows you to change the direction of the video signals. As a result, a picture from several system units is displayed on one user monitor.

Characteristics of the Aten model

KVM switch for 2 computers USB Aten is produced with three ports. V this case the minimum does not exceed 4.5 Gbps. The maximum resolution is 1080p. The clock frequency of the presented switch does not exceed 120 MHz. The level drops in the model are very rare. The minimum allowable temperature of the switch is no more than -15 degrees. The rate of differential signaling in this case is very high.

According to consumers, keyboard connection problems are rare. If we consider the disadvantages, then it is important to note the low bandwidth of the video sender. The threshold audio frequency of the model is about 80 kHz. In total, the model is capable of supporting no more than five channels at a time. This KVM switch for 2 USB computers costs about 1300 rubles on the market.

D Link reviews

KVM switch for 2 computers USB D Link allows you to connect no more than In this case, the amplifier is used with a protection system. The minimum throughput of the device is 5 Gbps. Support for 24-bit color will be implemented at high speed. According to buyers, device connection errors are rare.

The limiting clock frequency is at 130 MHz. In this case, the model is capable of processing no more than four channels at a time. If we talk about the disadvantages, then it is important to mention the low characteristic impedance. The model copes poorly with the transmission of a dual video stream. The user can purchase the specified switch at a price of 2200 rubles.

Model Description Planet IKVM-8000

The specified KVM switch for 2 computers USB-VGA deserves mostly positive customer reviews. First of all, it is important to note that it is produced in three ports. CEC protocols are supported in this case. The minimum throughput of the device is 5.5 Gbps. Video transmission issues reported by buyers high resolution are rare. The reverse channel technology is provided in this case. The threshold synchronization frequency of the device does not exceed 210 MHz.

Level drops are rare. The minimum allowable switch temperature is -20 degrees. The model copes well with dynamic synchronization of video files. The "Side" system deserves special attention. First of all, it increases the processing speed of audio tracks. Also "Side" helps when playing multichannel tracks. This switch is on sale at a price of 1700 rubles.

Planet IKVM-8055 device parameters

Planet IKVM-8055 USB-DVI 2 PC KVM Switch is sold with four ports. Bandwidth device - 3 Mbit per second. First of all, it is important to note that the model is capable of handling high-definition video streams. The sync threshold is 240 MHz. The model rarely has problems with decoding.

According to the owners, the video files are playable without question. Signal timing problems are rare. The system supports CEC protocols. The minimum allowable switch temperature is -15 degrees. The characteristic impedance fluctuates around 12 ohms. It is also important to note that the cutoff audio frequency is at 120 kHz. You can buy the specified switch on the market for 1600 rubles.

Characteristics of the Planet IKVM-8090 model

Planet IKVM-8090 is a compact and inexpensive KVM switch for 2 USB computers. Autoscanning devices, according to users, does not take a lot of time. The model is often purchased for large corporations. First of all, it is important to mention the high parameter of the threshold synchronization frequency. The characteristic impedance in this case does not exceed 23 ohms.

The system is capable of processing as many as six channels at a time. The video switch for the model is provided with support for CEC protocols. Level drops are rare. However, there are still drawbacks in the device. First of all, buyers note low bandwidth. Also, the model has problems with the color rendering of the AR format. The specified switch is on sale at a price of 1300 rubles.

Edimax EK-PAK2 reviews

Many buyers speak well of this switch. The throughput of the device is quite high. It should also be noted that the model supports high definition video streams. The device's synchronization threshold is 120 MHz. Unfortunately, the model does not have a reverse sound technology. However, downsampling problems are rare.

The indicator does not exceed 12 ohms. The minimum allowable switch temperature is -15 degrees. The decoding speed is high. Also to this should be added the ability to handle multithreaded data. In total, the model has three ports. The device is on sale at a price of 2300 rubles.

Description of the Edimax EK-PAK3 model

The above USB-PS 2 KVM switch for 2 computers is definitely worth the attention of users. Distinctive feature the specified model is a high threshold clock frequency. It is also important to note that the device has standard set commands for processing audio signals. The characteristic impedance is no more than 13 ohms.

The limiting sound frequency of this model is 120 KHz. According to buyers, recognition problems system unit are very rare. The rate of differential signal transmission in this case depends on the load of the system. The user can purchase this switch for 2100 rubles.

Edimax EK-PAK5 device parameters

These switches are manufactured with quality video senders. According to the buyers, the devices are recognized by the system very quickly. In this case, the user can connect up to three monitors. The threshold clock frequency of the device is equal to as much as 150 MHz. All major compression formats are supported by the system. If necessary, the data processing speed can be reduced.

The bandwidth of the specified switch is 5 Mbps. The decoding speed in this case depends on the system load. The model supports all major compression formats. The minimum allowable switch temperature is as much as -20 degrees. The limiting sound frequency of the device is at 110 KHz. If necessary, it is possible to connect switches. This model is on sale at a price of 2300 rubles.

Characteristics of the Eusso UKS8102

This USB 2 PC KVM Switch is manufactured with a powerful microprocessor unit. The throughput of the device is 5.5 Mbit per second. In this case, one fuse is installed. The indicator of the threshold frequency of synchronization is at the level of 130 MHz. The device supports all major compression formats. However, it should be noted that the switch sometimes has problems recognizing system blocks. In this case, the device does not support PP protocols.

The system is capable of handling no more than three heats at a time. The cut-off sound frequency of the switch is 80 kHz. As a rule, decoding data does not take much time. The minimum allowable switch temperature is -20 degrees. The characteristic impedance of the device is 12 ohms. You can buy the specified switch at a price of 1200 rubles.

Model description Eusso UKS8133

This USB to HDMI 2 PC KVM Switch is compact. It is also important to note that the instrument has three ports. In this case, color rendering problems appear infrequently. The switch supports CEC protocols. The throughput of the device is 5 Mbps. If necessary, you can connect a switch to the device. The sync threshold is 240 MHz.

In total, the model is capable of processing up to five channels at a time. She rarely has problems with data compression. According to buyers, the process of recognizing devices does not take much time. The limiting sound frequency of the modification is at 80 kHz. In the store, this KVM switch for 2 USB computers is on sale at a price of 2,400 rubles.

KVM switch cascading refers to the way additional KVM switches are connected to the main switch. The purpose of this procedure is to increase the number of ports for connecting servers and organizing access to control them from one or several consoles (KVM console - Keyboard, Video (monitor), Mouse). Often this possibility of expanding the control system big amount servers are called scaling.


It is theoretically possible to connect any KVM switches, but for full, convenient and correct operation, they must be compatible, and therefore:

  • the lower menu should be embedded in the upper KVM switch menu,
  • KVM switches must have the same interface,
  • must have the same functionality.

Cascading makes sense when extending access with regular KVM switches (not IP KVM). In turn, IP KVM switches are combined into unified system with centralized control using specialized software.


When cascading, KVM switches of the first level can be switches with an integrated control console (Keyboard Video Mouse) or an IP module, it makes no sense to connect "higher", since access from the console remote computer to the switch over IP is workplace operator (point of entry or access to the system). However, in order to combine IP KVM for management from a single console in a single room (eg data center), ATEN has provided higher level switches called "Matrix KVM".


Cascading switches


Cascade - Connect an optional KVM switch with port loss. With this option, the console port of the second level switch is connected to one of the ports for connecting computers (CPU port) of the KVM switch. This connection is usually made with an interface cable used to connect computers. It is possible to connect up to three levels, when the console port of the third level switch is connected to the "CPU port" (in ATEN devices this is the name of the port for connecting a computer or server) of the second level switch.

Wiring diagram for cascading ATEN switches.


In this diagram, the first level is the switch to which the console is connected (Keyboard Video Mouse). The switch of the second level is connected through the console port of the second and occupies one CPU port in the first, similarly the third is connected to the second.


Diagram of the maximum cascade connection of ATEN KVM switches using the example of CS9138.


With this connection, the maximum number of connected servers is 512 when using 73 ATEN CS9138 KVM switches. When I manage so many servers, it is simply impossible to keep in memory what is connected to what and through which port in which chain the KVM operator console can be connected to the KVM server interface. To solve this problem, ATEN has provided the possibility of embedded menus.




The figure shows the OSD menus of the ATEN CS9138 KVM switch.
Left - no cascading left,
On the right - after connecting an additional KVM switch to the second port of the first CPU.


The KBM switch menu has a tree structure. The photo on the right shows how the ports of the second switch are displayed in the menu of the first. You can assign server names to the CPU ports. Using the menu, you can set various modes of the switch, for example, enable automatic scanning of only active ports. Using the menu, you can directly connect to the control console required computer from the third level in a cascade.


Connecting switches with a loop (stack)


Daisy Chain connection to the stack - the connection of switches of different levels occurs via special cascade ports and special daisy cords (Daisy Chain). With this connection on the switch, the connection port computer CPU remains free, and the console ports of the lower level switches are disabled. On the switches in the indicator window, the number corresponding to the switch level lights up.


ATEN KVM Switches Daisy Chain Diagram

At correct selection compatible KVM switches for cascading in the switch menu top level, in the form of a "tree", the menu of the switch of the lower level is built in.


ATEN has provided the ability to stack KVM switches on some of the switches. Dedicated ports and a shelf cable are used to connect the switches.


Switches integrated with KVM console and IP KVM only have an output port. The rest of the switches have two input and output ports. The switch of the first level turns on the KVM console, and in the switches of the lower level, when connected by a daisy chain to the upper ones, the console ports are disabled. The shelf connection allows up to 32 KVM switches to be stacked. When connected, depending on the position of the switch in the stack, the indicator displays its number in the stack.


Indication of positioning of switches in a stack.


The OSD menu of the KVM switch is built sequentially one below the other and looks like shown in Fig. The first position corresponds to the device number in the stack, the second to the port number on the device. As in the previous version, you can set the server name and, if necessary, make a quick transition to any server.



On the left is the OSD menu of the KVM switches installed in the stack.


Mixed cascading.


Developing the direction of KVM switches, ATEN proposed a solution to the problem of administering a large number of servers by a group of operators according to the scheme any to any or to a closed group.


To address this challenge, ATEN offers Matrix Switches with truly huge server management access system scalability.


Mixed connection scheme for IT devices (servers, network switches, etc.).


When cascading into a stack with a loop up to 8 levels, you can get non-blocking access to 256 ports. When daisy-chain and cascade connections are used together, the system allows 9 administrators to have access to thousands of servers.


Though last option connection is able to solve the problem of almost any data center (sony thousands of KVM ports), but it still has limitations in comparison with the use of the CC2000 software product.


CC2000 Centralized Control System allows you to integrate under unified management unlimited number of devices located anywhere in the world, but that's another story.

With the advent of broadband Internet to offices, full-fledged remote administration became possible. Thanks to this technology, service organizations were able to significantly reduce the response time to a customer request, and system administrators were able to provide support even when they were away from the office. But the tools remote administration work only after the OS boots, if for some reason it is impossible to require the physical presence of a specialist. KVM over IP switches can solve this problem.

Probably all administrators know what KVM switches are, this is a device that allows you to use one console (monitor, keyboard and mouse) to control multiple PCs. KVM switches can be as simple as personalized:

So for rack mounting, supporting cascading and allowing you to manage a large number of servers at once (up to several hundred) from one place:

KVM over IP switches stand apart in this company, allowing you to access the PC console from anywhere using the TCP / IP protocol. Long time these devices were considered "luxury goods", but in recent times offers appeared on the market at a quite humane price, making them quite affordable for small organizations.

Let's consider the capabilities of the KVM over IP switch using an example ATEN ALTUSEN KH1508i worth 727 USD. Besides an attractive price this device allows control of up to 256 PCs (by cascading switches), supports PC, Mac, Sun platforms, PS / 2 and USB connections to PCs.

The switch is designed in 1U format and can be mounted in a rack. On the front panel there are output switching buttons, an active port indicator, a connector for updating the firmware, a power indicator and a Reset button.

Another feature of the switch is the use of UTP 5e twisted pair cable to connect controlled PCs, which allows them to be placed at a distance of up to 40 m. laying of expensive specialized cables. Connectors for controllable PCs, network, slave switches and console are located on the back of the switch:

To connect controlled PCs, client modules that emulate the necessary peripherals are used. Emulation is performed directly by the module, regardless of the presence of a control device. This means that if you forget to turn on the switch, the controlled PCs will still detect the keyboard, mouse and monitor at boot time and you do not have to restart them in order to gain access.

The manufacturer offers a wide range of client modules for controlling computers of different platforms; two types of client modules are available for PCs: KA9520 (PS / 2) and KA9570 (USB), costing 71 USD. Each module is a controller with an RJ-45 interface and a half-meter cable with VGA and PS / 2 (USB) connectors, has its own firmware that is regularly updated by the manufacturer, there is a switch on the module body that switches it to the firmware update mode. The KA9520 module is shown below:

For mounting on a vertical surface, a special basket is supplied with the module.

Switch settings are made via the on-screen menu or the web interface (to a somewhat limited extent). If you do not have Mac computers or Sun, then all settings will be accessible via the web (by default, all switch ports are configured for the PC platform).

The connection to the device is made via a secure HTTPS protocol despite the fact that the switch accepts connections on port 80, it still redirects to a secure connection (port 443). To transfer data between the switch and the client program, port 9000 is used, this should be taken into account when forwarding ports (i.e., in addition to 80 and / or 443, you also need to forward 9000).

Let's move on to the network functions of the switch, by default it is configured to receive settings via DHCP, which, in our opinion, is much better than the preset IP, just look at which address is assigned to the device in DHCP settings server and reserve it for the appropriate MAC address(indicated on the body of the device).

For access, you can use any browser (optimally IE), the web interface is not rich in settings, you can run Windows (only through IE) or a Java client, or download them if you cannot run them through the browser in any way.

The parameter deserves special attention Network transfer rate, for comfortable work with the device, there should be specified the minimum guaranteed speed of the channel through which the switch is accessed.

To access the managed PCs, you need to start the client. We were unable to start Windows Client on Windows 7 64-bit, in this case a Java client that works on any platform with Java support comes to the rescue. Already in the client we can produce more fine tuning devices:

To switch to managed devices, use the tab Main, which displays all client modules connected to the switch (or chain of switches):

At correct setting data transfer speed working through a remote client is quite comfortable, the only drawback is some (sometimes significant) lag of the mouse cursor on the remote system from the cursor on the control PC.

However, it should be remembered that work via KVM Over IP is required for the most part in emergency situations when control at the PC load level is required, in other cases it will be much more comfortable to work via RDP. If you are using a USB module (KA9570) please make sure BIOS is enabled for USB keyboards and mice to avoid unpleasant surprises.

We also recommend that you configure the server BIOS to turn on by a signal from the keyboard or over the network. This will allow you to remotely turn on the server if you suddenly turn it off by mistake or turn off someone from overly diligent employees.

KVM over IP switches allow an administrator to get almost complete control over a controlled PC from anywhere in the world, if there was Internet access. And the seemingly relatively high price of the device at first glance is more than compensated by the provided capabilities. Either way, it's worth considering what is cheaper, a KVM IP switch or the plant downtime required for a technician to arrive.

The working conditions of situational centers, control rooms or audio-video recording studios often require employees to be able to simultaneously control the work of several computers from one workplace. Impossible? Not at all! This is what the KVM switch is for.

What are KVM switches?

KVM switches are devices that allow you to control a large number of computers from one workstation equipped with a monitor, keyboard and mouse. Such a workplace is often called a work console, or simply a console. Up to 64 computers can be connected to one console using the modern KVM switch model.

How do KVM switches work?

The KVM switch connects the monitor, keyboard, and mouse interfaces from the work console to the selected computer. In order to start working with another computer, you just need to "switch" these interfaces to it. Switching can be done in several ways:
Using the control buttons on the KVM switch body
Using keyboard hotkeys
By hovering the mouse cursor
Via On Screen Display (OSD)

Most KVM switches support all of these switching methods. Thus, the KVM switch allows you to conveniently and efficiently work with multiple computers using a single console.

What types of signals does the KVM switch allow to switch?

Modern KVM switch models allow you to work with the following types of signals:

Single and / or dual-link DVI / VGA signals
PS / 2 and / or USB keyboard and mouse signals
Signals transparent USB 2.0
Audio signals
RS232 signals

What are the main differences between KVM switch models?

Today there are many models of KVM switches, differing in parameters and functionality. Among the main differences are the following features:

Video signal transmission support
Ability to switch between computers using the mouse cursor
The ability to transmit one or more video channels (to create multi-monitor workstations)
Ability to play multiple video signals on one monitor
Direct connection or connection using IP networks
Using CATx or Fiber Optic Cables
Support for one or more work consoles

What are the benefits of a KVM switch?

The use of KVM switches allows you to effectively organize the work of equipment and personnel in applications that require high level concentration, reliability and productivity.

The main advantages are:

Convenient centralized management a lot of computer equipment
Improving the ergonomics of workspaces, creating comfortable workplaces
Reduced operating and energy costs
Effective monitoring of equipment systems operation
No need to install additional software
Protection against unauthorized access to computers and servers

Do you use KVM switches? How do they help you in your work? Let us know in the comments!

Fitting © 2021 Tech Look - Gadgets. Android device. Antiviruses. Security. Graphics. Internet. Mobile devices