The KVM switch is a device that switches a large set of devices between two personal computers. Initially, models could only transmit signals from a monitor and keyboard with a mouse. Then came the switches with the ability to process sound. Modern models are made with support for the CEC protocols. All this makes it possible to avoid many errors. 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 clock frequency. Also, the manufacturer without fail indicates the number of ports on the panel. The minimum allowable temperature of the switches fluctuates around -15 degrees. In order to better understand the devices, you should consider the principle of the models.
The device and principle of operation
Each KVM switch to 2 USB computers consists of two parts. First of all, it is important to note the microprocessor unit. The specified element interacts with the keyboard, as well as with the mouse. This is due to the transmission of signals from 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, as well as a set of resistors. Using short pulses, data is exchanged. All this allows you to change the direction of the video signals. As a result, a picture from several system units is displayed on a single user monitor.
Aten Model Features
A KVM switch to 2 USB Aten computers is made with three ports. In this case, the minimum bandwidth does not exceed 4.5 Gbit per second. The maximum resolution is 1080p. The synchronization frequency of the presented switch does not exceed 120 MHz. Level differences in the model are very rare. The minimum allowable temperature of the switch is no more than -15 degrees. The differential signal transmission speed in this case is very high.
According to consumers, keyboard connectivity issues are rare. If we consider the shortcomings, it is important to note the low bandwidth of the video sender. The threshold sound frequency of the model is about 80 kHz. In total, the model at a time is capable of supporting no more than five channels. This KVM switch for 2 USB computers is on the market in the region of 1300 rubles.
D Link Reviews
The KVM switch for 2 USB D Link computers allows you to connect up to two monitors. In this case, the amplifier is used with a protection system. The minimum bandwidth of the device is 5 Gbit per second. Support for 24-bit color will be implemented at high speed. According to customers, device connection errors are rare.
The maximum clock frequency is 130 MHz. In this case, the model is capable of processing no more than four channels at a time. If we talk about the shortcomings, it is important to mention the low wave impedance. With the transmission of a dual video stream, the model copes poorly. The user can purchase the specified switch at a price of 2200 rubles.
Planet IKVM-8000 Model Description
The specified KVM switch for 2 USB-VGA computers customer reviews deserves mostly positive. First of all, it is important to note that it is produced at three ports. CEC protocols are supported in this case. The minimum bandwidth of the device is 5.5 Gbit per second. According to buyers, problems with the transmission of high-resolution video are rare. The reverse channel technology is provided in this case. The threshold frequency of synchronization of the device does not exceed 210 MHz.
Level differences are rare. The minimum allowable temperature of the switch is -20 degrees. With dynamic synchronization of video files, the model copes well. Special attention is given to the Side system. First of all, it increases the processing speed of audio tracks. Side also helps with multi-channel tracks. This switch is on sale at a price of 1700 rubles.
Parameters of the Planet IKVM-8055 device
The KVM switch for 2 computers USB-DVI Planet IKVM-8055 is sold with four ports. The bandwidth of the device is 3 Mbit per second. First of all, it is important to note that the model is capable of processing high-resolution video streams. The threshold clock frequency is 240 MHz. Model decoding problems are rare.
According to the owners, the video files are played without question. Problems with signal synchronization are rare. Protocols CEC system supports. The minimum allowable temperature of the switch is -15 degrees. The wave resistance index fluctuates around 12 ohms. It is also important to note that the maximum sound 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 much time. Often a model is purchased for large corporations. First of all, it is important to mention the high parameter of the threshold synchronization frequency. The wave impedance in this case does not exceed 23 ohms.
At one time, the system is capable of processing as many as six channels. The model video switch is provided with support for CEC protocols. Level differences are rare. However, there are still drawbacks in the device. First of all, customers note low bandwidth. Also, the model has problems with color rendering of the AP format. The specified switch is on sale at a price of 1300 rubles.
Edimax EK-PAK2 Reviews
Many buyers respond well to this switch. The bandwidth of the device is quite high. It should also be noted that the model supports high-resolution video streams. The threshold clock frequency of the device is 120 MHz. Unfortunately, reverse sound technology is not provided for the model. However, problems with downsampling are rare.
The wave resistance does not exceed 12 ohms. The minimum allowable temperature of the switch is -15 degrees. Decoding speed is high. Also added to this is the ability to process multi-threaded data. In total, the model has three ports. The device is sold at a price of 2300 rubles.
Edimax EK-PAK3 Model Description
The specified KVM switch for 2 USB-PS 2 computers definitely deserves the attention of users. A distinctive feature of this model is the high threshold synchronization frequency. It is also important to note that the device has a standard set of commands for processing audio signals. The wave impedance index is not more than 13 ohms.
The maximum sound frequency of this model is 120 kHz. According to customers, problems with recognizing the system unit are very rare. The speed of differential signal transmission in this case depends on the system load. The user can purchase this switch for 2100 rubles.
Edimax EK-PAK5 device parameters
These switches are made with quality video senders. According to customers, 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 as much as 150 MHz. The system supports all major compression formats. If necessary, the processing speed can be reduced.
The throughput of the specified switch is 5 Mbps per second. The decoding speed in this case depends on the system load. The model supports all major compression formats. The minimum allowable temperature of the switch is as much as -20 degrees. The maximum sound frequency of the device is at 110 kHz. If necessary, it is possible to connect the switches. This model is for sale at a price of 2300 rubles.
Specifications of the Eusso UKS8102 model
This KVM switch for 2 USB computers is based on a powerful microprocessor unit. The bandwidth of the device is 5.5 Mbit per second. In this case, one fuse is installed. The threshold synchronization frequency indicator 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 with recognizing system units. In this case, the device does not support PP protocols.
At one time, the system is capable of processing no more than three glows. The maximum sound frequency of the switch is 80 kHz. As a rule, decoding data does not take much time. The minimum allowable temperature of the switch is at -20 degrees. The wave resistance of the device is 12 ohms. You can buy this switch at a price of 1200 rubles.
Eusso UKS8133 Model Description
This KVM switch for 2 USB-HDMI computers is notable for its compact size. It is also important to note that the device has three ports. In this case, problems with color reproduction appear infrequently. Protocols CEC switch supports. The bandwidth of the device is 5 Mbps. If necessary, you can connect a switch to the device. The threshold clock frequency 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 customers, the device recognition process does not take much time. The maximum sound frequency of the modification is at the level of 80 kHz. In the store, this KVM switch for 2 USB computers is sold at a price of 2400 rubles.