Prestel 4KU3H41 4K60 4×1 KVM Switcher User Manual
- June 1, 2024
- Prestel
Table of Contents
Prestel 4KU3H41 4K60 4×1 KVM Switcher
Thank you for purchasing this product
For optimum performance and safety, please read these instructions carefully
before connecting, operating or adjusting this product. Please keep this
manual for future reference.
Surge protection device recommended
This product contains sensitive electrical components that may be damaged by
electrical spikes, surges, electric shock, lighting strikes, etc. Use of surge
protection systems is highly recommended in order to protect and extend the
life of your equipment.
Introduction
This is a 4×1 KVM Switcher with hotkey switching. It supports resolutions up to 4K@60Hz 4:4:4 8bit and can also transmit USB 3.0 signal up to 5Gbps for KVM function. The switcher features virtual interaction function, so that it can automatically wake up the connected PC that is in standby mode, which can reduce the switching time. It also supports direct switching through buttons on the front panel, IR remote, and hotkey through keyboard/mouse connected to the special USB port. It provides a wide compatibility choice for different operating systems, such as Windows, Mac OS and Linux, no driver required and simple plug and play.
Features
- HDCP 2.3 compliant
- Support Ultra-wide Screen, resolution up to 4K@60Hz, 2K@60Hz/144Hz as specified in HDMI 2.0
- HDR, HDR10, HDR10+, Dolby Vision, HLG pass-through
- Using only 1 set of keyboard, mouse and monitor to control 4 computers
- Support video fast switching, and keyboard/mouse seamless switching
- Each input port has an EDID emulator to provide the correct information for the PC
- Support hot plug, disconnect or connect devices to the KVM at any time
- Switching via front panel buttons, keyboard/mouse hotkeys, IR remote control, and RS-232 commands
- Support auto switching
- Advanced hardware/software design and production ensure zero latency
- The integrated USB 3.0 ports allow you to share USB peripherals like printer, scanner, webcam and hard disk between computers with data transfer rate up to 5Gbp/s
- Compact design for easy and flexible installation
Package Contents
- 1 x 4K60 4×1 KVM Switcher
- 1 x IR Remote
- 1 x 3pin-3.81mm Phoenix Connector (male)
- 1 x Fixed Frequency 38KHz IR Receiver Cable (1.5 meters)
- 4 x USB Cable (USB 3.0, AM to BM, 1.8 meters)
- 4 x HDMI Cable (male to male, 1.5 meters)
- 2 x Mounting Ears
- 4 x Machine Screws (KM3*4)
- 1 x 12V/1A Multinational Locking Power Supply
- 1 x User Manual
Specifications
Technical
HDMI Compliance| HDMI 2.0
HDCP Compliance| HDCP 2.3
Video Bandwidth| 18Gbps
Audio Latency| No Latency
Video Latency| No Latency
Video Resolution| Up to 4K@60Hz, 2K@60Hz/144Hz
IR Level| 5Vp-p
IR Frequency| Fixed frequency 38KHz
Color Space| RGB 4:4:4, YCbCr 4:4:4, YCbCr 4:2:2, YCbCr 4:2:0
Color Depth| 8/10/12bit
HDR| HDR, HDR10, HDR10+, Dolby Vision, HLG
CEC| Support
Audio Formats
| HDMI IN/OUT:
LPCM, Dolby Digital/Plus/EX, Dolby True HD, Dolby Atmos, DTS, DTS-EX, DTS-96/24, DTS High Res, DTS-HD Master Audio, DTS:X, DSD
L/R OUT:
PCM 2.0CH
ESD Protection| IEC 61000-4-2:
±8kV (Air-gap discharge), ±4kV (Contact discharge)
---|---
Connection
Input ports| 4 x HDMI input [Type A, 19-pin female]
Output ports| 1 x HDMI output [Type A, 19-pin female]
1 x L/R audio output [3.5mm Stereo Mini-jack]
Control ports
| 1 x RS-232 [3pin-3.81mm phoenix connector] 1 x IR EXT [3.5mm Stereo Mini- jack]
4 x USB HOST [USB Type B]
4 x USB DEVICES [USB Type A]
Mechanical
Housing| Metal Enclosure
Color| Black
Dimensions| 270mm [W] x 100mm [D] x 30mm [H]
Weight| 756g
Power Supply| Input: AC 100 – 240V 50/60Hz
Output: DC 12V/1A (US/EU standard, CE/FCC/UL certified)
Power Consumption| Typical value: 5.28W Standby mode: 0.72W
Operating
Temperature
| 32 – 104°F / 0 – 40°C
Storage Temperature| -4 – 140°F / -20 – 60°C
Relative Humidity| 20 – 90% RH (no-condensing)
Recommended HDMI Cable
Video Resolution| 4K60 4:4:4| 1080P 4:4:4
HDMI Cable Type| HDMI cable| HDMI cable
HDMI Cable Length
(HDMI IN / OUT)
| 5m/16ft| 10m/33ft
The use of “Premium High Speed HDMI” cable is highly recommended.
Operation Controls and Functions
Front Panel
| No. | Name | Function Description |
|---|---|---|
| 1 | USB 3.0 ports | USB 3.2 Gen 1 device ports, connected to USB 3.0 flash disk, |
camera, printer etc.
2
| USB 3.0 ports (with hotkey mode)| ▪ When Hotkey switch to OFF mode, these two ports support USB 3.2 Gen 1 device.
▪ When Hotkey switch to ON mode, these two ports support USB 1.1 mouse and keyboard only.
3| Power LED| The Power LED will light in green when the product is working,
and red when the product is on standby.
4| Input channel
LED 1/2/3/4
| When the HDMI input port 1/2/3/4 is selected as the signal input channel,
the corresponding LED 1/2/3/4 will light in green.
5| AUTO LED| When the auto switching function is enabled, the AUTO LED will
light in green, otherwise it will light off.
6| IR Window| IR signal receiving window.
7
| ****
HOTKEY
switch
| Use the switch to enable/disable the hotkey switching mode.
▪ Switch to “ON”: The connected keyboard and mouse support hotkey switching mode.
▪ Switch to “OFF”: The connected keyboard and mouse don’t support hotkey switching mode.
8| SELECT
button
| Press the button to switch the input channel.
Rear Panel
| No. | Name | Function Description |
|---|
1
| ****
PC 1/2/3/4 ports
| HDMI: HDMI signal input port, connected to HDMI source device such as PC with HDMI cable.
USB HOST: USB Host port, connected to the same PC along with HDMI port. ( Note: The PC 1 USB HOST port can be used for firmware upgrade. )
2| DISPLAY
HDMI port
| HDMI signal output port, connected to HDMI display device such as TV or
Monitor with HDMI cable.
3| L/R audio port| 3.5mm analog audio output port.
4| RS-232 port| 3-pin phoenix connector, connected to a PC or control system
for serial port upgrade.
5
| ****
IR EXT port
| IR signal receiving port, connected with 38KHz IR Receiver cable. If the IR
signal receiving window of the unit is blocked or the unit is installed in a
closed area out of infrared line of sight, the IR receiver cable can be
inserted to the “IR EXT” port to receive the IR remote signal.
6| DC 12V| DC 12V/1A power input port.
IR Pin Definition
IR Receiver pin’s definition is as below:
IR Remote
- Power on or Standb y: Press this button to power on the switcher or set it to standby mode.
- Auto : Press this button to enable/disable the auto switching function.
- 1/2/3/4 : Press 1/2/3/4 button to select the HDMI input port 1/2/3/4 as the input channel, and the corresponding channel LED on the front panel will light in green.
- Reload : Press this button to cyclically switch the input channel.
Hotkey Switch Function
The Hotkey switch on the front panel allows you to enable/disable the hotkey
switch function.
- When Hotkey switch to OFF mode, the hotkey switch function is disabled, and two USB 3.0 ports (with hotkey mode) support USB 3.2 Gen 1 device.
- When Hotkey switch to ON mode, the hotkey switch function is enabled, and two USB 3.0 ports (with hotkey mode) only support USB 1.1 mouse and keyboard, which can be used for hotkey switching.
Keyboard & Mouse Hotkey Function
When the hotkey mode is enabled, you can use keyboard and mouse hot keys to
operate and control the product.
- Keyboard hotkeys are as following:
- Mouse hotkeys are as following:
- Double-Click Middle-Right (Double-click the mouse scroll wheel, and then click the right button): Switch to next input
- Double-Click Middle-Left (Double-click the mouse scroll wheel, and then click the left button): Switch to previous input
ASCII Commands
The product also supports ASCII commands control. Connect the RS-232 port of
the product to a PC with a 3-pin phoenix connector cable and an RS-232 to USB
cable. The connection method is as follows.
Then, open a Serial Command tool on PC to send ASCII commands to control the product. The ASCII commands list about the product is shown as below.
ASCII Commands
Serial port protocol. Baud rate: 115200 (default), Data bits: 8, Stop bits:1,
Check bit: 0
x – Parameter 1| z – Parameter 2| ! – Delimiter| |
Command Code| Function Description| Example| Feedback|
Default Setting
help!| List all commands| help!| |
status!| Get device current status| status!| |
r type!| Get device model| r type!| 4×1 kvm hdmi2.0 switcher|
r fw version!
|
Get firmware version
|
r fw version!
| mcu fw version: vx.xx.xx
kvm fw version:
vx.xx.xx
|
power z!
| Power on/off the device (z=0~1)
0. power off
1. power on
|
power 1!
|
power on
|
r power!| Get current power state| r power!| power on|
reboot!| Reboot the device| reboot!| reboot…|
reset!| Reset to factory defaults| reset!| reset to factory defaults|
s output 1 stream x!
| Set output 1 stream enable/ disable (x=0~1)
0. disable output stream
1. enable output stream
|
s output 1
stream 1!
|
output 1 stream: enable
|
output 1 stream: enable
---|---|---|---|---
r output 1 stream!| Get output 1 stream status| r output 1 stream!| output 1
stream: enable|
s auto switch x!
| Enable/disable auto switch feature (x=0~1)
0. disable auto switch
1. enable auto switch
|
s auto switch 1!
|
auto switch: enable
|
auto switch: enable
r auto switch!| Get auto switch feature| r auto switch!| auto switch: enable|
s output 1 in source x!
| Route input x source to output 1 (x=1~4) 1.input1
2.input2 3.input3 4.input4
|
s output 1 in source 1!
|
output1->input1
|
r output 1 in source x!| Get output 1 selected input source| r output 1 in
source!| output1->input1|
s beep z!
| Enable/disable buzzer function (z=0~1)
0. beep off
1. beep on
|
s beep 1!
|
beep on
|
beep off
r beep!| Get buzzer state| r beep!| beep on|
Application Example
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