What is the 4 in 3 out HDMI® KVM seamless switcher?
This is a computer host that can connect up to 4 graphics cards and supports 3 HDMI® outputs, enabling sharing of 1 set of keyboard and mouse, 3 HDMI® monitors, and 2 USB3 .0 HUB device, a multi-computer switching device that won’t blacken the screen when switching, and supports the function of expanding 1 main screen to 2 secondary screens. This kind of device generally supports automatic recognition of screen resolution, and can also be used to share U disks, printers, etc. among four computers. It is widely used in scenarios such as securities finance, multimedia teaching, film and television editing, animation production, etc. The following will take the 4 in 3 out HDMI® KVM seamless switch EKL-413HW as an example to explain its characteristics, interface description, connection diagram, usage, etc. to facilitate your understanding and use.
4 in 3 out HDMI® KVM seamless switcher EKL-413HW
4 in 3 out HDMI® KVM seamless switch features
01. Compatible with USB3.0, USB2.0, USB1.1 devices.
02, compatible with Windows, Mac, Linux, Android, Hongmeng and other mainstream operating systems.
03. Use HDCP1.4.
04, HDMI® interface input and output support 3840x2160 30Hz, 1920x1080P 60Hz, 1920x1080P 30Hz, 720P 60Hz and other resolutions.
05. Use HDMI®standard cable to support input and output distances up to 10 meters.
06. Support USB port insertion automatic identification detection, automatic scanning, computer sleep wake-up and other functions.
07. No need to install drivers, plug and play, easy and fast to use, compatible with most brands of wireless keyboards and mice, mechanical keyboards, and gaming mice.
08. You can select the computer host you want to operate through various switching methods such as keyboard hot keys, mouse, panel buttons, infrared remote control, RS232 serial communication switching, etc. Video screen and audio functions.
09. Supports hot-swappable function. You can directly insert and unplug cables and other equipment components from the port without turning off the power of the device.
4 in 3 out HDMI® KVM seamless switch interface description
4 in 3 out HDMI® KVM seamless switch connection diagram
4 in 3 out HDMI® KVM seamless switcher switching method
The first switching method: key switching
Switch the host signal to the corresponding host by manually pressing the ①, ②, ③, and ④ buttons on the HDMI® KVM seamless switcher.
The second switching method: remote control switching
Aim the delivered infrared remote control at the IR logo infrared receiver on the front of the HDMI® KVM seamless switch, and press ①, ②, ③, on the remote control Button ④ switches the host signal to the corresponding host, or switches to another host by pressing the previous or next button. The remote control button function description is as follows:
The third switching method: mouse switching
Double-click the scroll wheel in the middle of the mouse + the right mouse button to enter the sequential cycle switching of hosts ①~④, double-click the scroll wheel in the middle of the mouse + the left mouse button to enter ④~① The number of hosts is switched in a sequential cycle, and one host is switched every time the operation is performed. The switching principle is shown in the figure below
The fourth switching method: keyboard switching
Some host switching and function switches of the switch can be realized through keyboard combination hot keys. The keyboard hotkey codes and corresponding function descriptions are as follows:
Note: The switching hotkey defaults to the Ctrl key on the right, that is Quick double-click button; supports switching to one of the following: left Ctrl button, right Ctrl button, Scroll Lock button, Num Lock button, Caps Lock button. R'Ctrl represents the Ctrl key on the right side of the keyboard; L'Ctrl represents the Ctrl key on the left side of the keyboard; R'Ctrl is used by default.
| Hotkey Combinations | Feature description |
| Quickly double-click R'Ctrl + numeric key 1 (or 2, 3, 4) + Enter | If the numeric key is 1, it switches to computer 1. If the numeric key is 2, it switches to computer 2. If the numeric key is 3, it switches to computer 3. If the numeric key is 4, it switches to computer 4. |
| Quickly double-click R'Ctrl + B + Enter | Buzzer on or off |
| Quickly double-click R＇Ctrl + T + Enter | Turn tracking on or off |
| Quickly double-click R＇Ctrl + M + Enter | Turn mouse switching function on or off |
| Quickly double-click R＇Ctrl + S + Enter | Turn on the automatic scan function, press ESC key to turn it off |
| Quickly double-click R＇Ctrl + S + numeric keys 1~9 + Enter | Set the automatic scan time, the time unit is: seconds |
| Quickly double-click R＇Ctrl + R + Enter | Turn on the reset function |
| Quickly double-click R＇Ctrl + L＇Ctrl + Enter | Change the switching hotkey to Ctrl key on the left |
| Quickly double-click R'Ctrl + Scroll Lock + Enter | Change the switch hotkey to Scroll Lock key |
| Quickly double-click R'Ctrl + Num Lock + Enter | Change the switch hotkey to Num LockKey |
The fifth switching method: RS232 serial communication switching
This method is generally used in industry and development. For normal use, it is recommended to give priority to the above four methods. RS232 serial communication code and function are as follows
| Serial port settings | Baud rate 115200bps, 8-bit data, 1 stop bit, check digit None, hexadecimal |
| Enter 1 (switch to computer host 1) | 0x30 0x30 0x30 0x0a 0x0d |
| Input 2 (switch to computer host 2) | 0x30 0x30 0x31 0x0a 0x0d |
| Enter 3 (switch to computer host 3) | 0x30 0x30 0x32 0x0a 0x0d |
| Enter 4 (switch to computer host 4) | 0x30 0x30 0x33 0x0a 0x0d |
4 in 3 out HDMI® KVM seamless switch performance parameters
The following takes the 4 in 3 out HDMI® KVM seamless switch EKL-413HW as an example to show you the relevant parameters:
Computer connection interface: HDMI® Type A female socket + USB3.0 Type A port + 3.5mm 3-section audio interface
Console connection interface: HDMI® type A female socket + USB3.0 type B port + 3.5mm 3-section audio interface
HDMI® resolution: 3840x2160 30Hz, 1920x1080P 60Hz, 1920x1080P 30Hz, 720P 60Hz, etc.
HDMI® video bandwidth: 340MHz
HDMI® video rate: 10.2Gbps
HDMI® video color depth: 3840x2160 30Hz (420/422) 8/10/12Bit
Maximum operating current: 450mA
Power adapter: AC input (50~60Hz) 100~240V, DC output: 5V/2A
Operating temperature/humidity: 0~40℃/ 5~85%RH (no condensation)