Discontinued. 4-Port, Dual-Head HDMI (4K/60Hz) Ultra-HD KVM switch with USB 2.0 and audio support.

replaced by SM-UHN-4D

What is the UHDN-4P-Duo?

The UHDN-4P-Duo is a 4-port, dual-head HDMI KVM switch with Ultra-HD 4K/60Hz resolution video emulation. It can control keyboard-mouse functions on up to four remote computers, and emulates video from HDMI source devices.

Why choose UHDN-4P-Duo?

The UHDN-4P-Duo is the perfect control solution for supervisors and administrators who use dual-displays with HDMI connectors, allowing them to take command of keyboard and mouse functions on remote systems with the press of a button.

Better still, the UHDN-4P-Duo is the first dual-head KVM switch on the market to offer full Ultra-HD 4K emulation at 60Hz directly out of the box. It features EDID-assisted HDMI emulation, which ensures visual workspaces and screen resolutions are remembered every time it connects to a new system: it’s a powerful, simple, and invaluable tool!

Controlling the UHDN-4P-Duo:

The UHDN-4P-Duo is easy to control in a variety of methods, including:

  • Front Panel Buttons: switch between devices you wish to control and emulate with simple SELECT buttons on the UHDN-4P-Duo’s front panel.
  • USB Keyboard Hot Keys: control switching functions of the UHDN-4P-Duo using programmable Hot Keys on a connected USB keyboard.
  • RS-232 Commands: control switching functions of the UHDN-4P-Duo using RS-232 serial commands.

Applications for UHDN-4P

The UHDN-4P-Duo excels in any professional multi-system environment, especially those where high resolution video plays a crucial role in every day workflow. Ultra-HD 4K KVM switching is a great fit in environments like server hubs, control rooms, production studios and post-production houses, transportation facilities like airports, hospitals and medical centers, and corporate IT service centers.


  • Supports up to Ultra-HD 4K (3840×2160) @ 30/50/60Hz.
  • Supports 3D.
  • Supports LPCM, Dolby-AC3, DTS7.1, and DSD/Dolby TrueHD/DTS-HD master audio.
  • Supports HDMI 1.3, 1.4, & 2.0.
  • HDMI and HDCP compliant.
  • Control up to four computers with a single KVM.
  • Full EDID HDMI video emulation.
  • Zero pixel loss with TMDS signal correction.
  • Supports USB Keyboard-Mouse emulation.
  • Supports all USB 2.0 devices.
  • Optionally rack mountable.
  • Hot key commands for quick channel selection.
  • Independent (asynchronous) switching of KVM and peripheral USB ports. Users can scan a document and save in another computer.
  • Complete KVM emulation for error free booting.
  • Easy switching via front-panel, RS-232 or hot keys.
  • Full HDMI support, backwards compatibility.


  • (1) UHDN-4P-Duo — 4-Port, Dual-Head Ultra-HD 4K/60Hz KVM Switch
  • (1) Power Supply
  • (1) Quick Installation and User Guide
  • Server hubs
  • Retail spaces
  • Educational facilities
  • Airports
  • Dealer rooms
  • Hospitals and medical offices
  • Control rooms
  • Audio/Video Presentation Spaces
  • Hotels and Resorts
Link Rate 5.4 Gbps
Input Interface (8) HDMI 2.0 (female)
Output Interface (2) HDMI 2.0 (female)
Resolution 480i to 4Kx2K @ 60Hz (YUV420)
Input Equalization Automatic
Bandwidth 300 MHz, 10.2 Gbps
HDCP Compliant Yes
Max Cable Length 40 ft. (depending on cable quality)
Input (4) 3.5mm Stereo Audio Jack
Output (1) 3.5mm Stereo Audio Jack
Frequency Response 20Hz ~ 20KHz
Nominal Level 0.0 – 1.0 V
Common Mode Rejection @ 60 dB
Signal Type USB 2.0, 1.1, and 1.0 w/ internal hub
Input Interface (4) USB Type B (female)
Output Interface (2) USB 1.1 Type A for keyboard and mouse; (2) USB 2.0 Type A Transparent
Front Panel Buttons (SELECT audio/video source)
RS-232 Via SmartControl @ 9600 bps
Hot Keys Via Keyboard
Emulation Keyboard, Video and Mouse
Power External 100-240 VAC/ 5VDC4A
Dimensions 2” H x 5.75” D x 12.75” W
Weight 3.55 lbs
Approvals UL, CE, ROHS Compliant
Operating Temp.  +23 to +95°F (-5 to +35°C)
Humidity 5 to 90% (No Condensation)
Part No. Description
UHDN-4P-DUOS 4-Port, Dual-Head Ultra 4K-60 KVM Switch. Includes: [UHDN-4P-Duo and (PS5VD4A)]

    Contact form