Discontinued.Access and control keyboard-video-mouse functions of 4 remote computers from one box with four local HDMI monitors.

replaced by SM-UHN-4Q

What is the HDN-4Quad?

The HDN-4Quad is a 4-port KVM switch with quad-head HDMI video connectors; supports video up to 4K (3840×2160 @30Hz) Full HD resolution.

How does the HDN-4Quad Work?

The HDN-4Quad allows users to easily access, control, and switch between 4 remotely connected computers from one convenient central PC workstation. Outfitted with quad-head HDMI video connectors, the HDN-4Quad supports video from remote desktops on up to 4 local displays simultaneously, which is perfect for supervising workflow and monitoring operations.

Controlling the HDN-4Quad

The HDN-4Quad is plug-and-play, easy to install into any AV setup and use right out of the box!

Once set up, the HDN-4Quad is controlled with:

  • Front Panel Buttons: Two simple source selection buttons that make it easy to switch between different computers.
  • USB Keyboard Hotkey Commands: Simple hotkey commands over PC that offer more robust control of the HDN-4Quad.
  • TCP/IP Web Console: Connect to an optional online interface that offers full visual command of the HDN-4Quad’s switching functions.

Applications for HDN-4Quad

Perfect for monitoring and managing operations on multiple remote computers, the HDN-4Quad excels in all kinds of environments including data centers, industrial control rooms, transportation hubs, educational facilities, and more!


  • 4-port KVM switching; access & control keyboard-video-mouse functions on up to 4 remote computers
  • Supports all USB 2.0 devices (keyboard, mouse, peripherals).
  • Quad-head HDMI connectors for up to 4 local monitors.
  • Up to 4K (3840×2160 @30Hz) Full HD Resolution emulation.
  • Supports stereo audio.
  • Front-panel buttons for easy operation
  • Keyboard hotkey commands
  • Optional TCP/IP web-console command
  • Plug-and-Play: easy to install & use!


  • (1) HDN-4Quad
  • (1) Power supply
  • (1) Quick Start Guide
  • Control rooms (industrial, transportation, media)
  • Presentation spaces (lecture halls, entertainment venues, conference rooms)
  • School & Universities
  • Retail spaces (storefronts, malls, outlets)
  • Data Centers
  • Dealer Rooms
  • Hospitality (hotels, inns, resorts)
  • Digital Signage Displays
Format HDMI 1.4
Input Interface (16) HDMI
Output Interface (4) HDMI
Resolution Up to 4K (3840×2160 @30Hz)
DDC 5 volts p-p (TTL)
Input Equalization Automatic
Input Cable Length Up to 20 ft.
Output Cable Length Up to 20 ft.
Input Interface (4) 3.5 mm Stereo Audio
Output Interface (1) 3.5 mm Stereo Audio
Impedance 600 Ohm
Frequency Response 20 Hz to 20 kHz
Nominal Level 0-1.0 V
Common Mode Rejection at 60 dB
Signal Type USB 2.0, 1.1, and 1.0 w/ internal hub
Input Interface (4) USB Type B
Output Interface (2) USB 1.1 Type A for KVM Devices
(2) USB 2.0 Type A Transparent
Front Panel Buttons < M1||M2 > source selection buttons
RS-232 DB9 Female – 9600 N,8,1, No flow control
Hotkeys via USB keyboard
Power External 100-240 VAC/ 5VDC4A
Dimensions 4.6” H x 5.8” D x 12.75” W
Weight 5.4 lbs
Approvals UL, CE, ROHS Compliant
Operating Temp 23 to 95°F (-5 to 35°C)
Storage Temp -4 to 185 °F (-20 to 85 °C)
Humidity Up to 95% (No Condensation)
Emulation Keyboard and Mouse
Model # Description
HDN-4QuadS HDN-4Quad, 4×4 HDMI, USB 2.0, Audio Switch. Includes: [HDN-4Quad & (PS5VDC4A)]

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