Quantum Data Systems (H.K.) Ltd.

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Connectivity Extension arrow KVM Extension arrow KVM Extenders over CATx arrow USB KVM Extender via CAT5 up to 300 Feet

USB KVM Extender via CAT5 up to 300 Feet

Price per Unit (piece):
Contact us for availability

Features & Applications

The XTENDEX?ST-C5USBV-300 USB KVM extender extends a USB keyboard/mouse and VGA display up to 300 feet via CAT5/5e/6 cable. Each ST-C5USBV-300 consists of a local unit that connects to a computer and provides local keyboard, monitor and mouse connections, and a remote unit that connects to a keyboard, monitor and mouse. The local and remote units are interconnected via CAT5/5e/6 cable.

  • Supports local and remote access.
  • Compatible with all video resolutions up to WUXGA (dependant upon CAT5/5e/6 extension length).
  • Maximum 1280x1024 video resolution at 300 feet; higher resolutions are supported at shorter distances up to 1920x1440 (see resolution chart below).
  • Keyboard and mouse are hot-pluggable.
  • Keep-alive keyboard/mouse emulation for flawless operation.
  • Built-in surge protection.
  • Allows users to back-rack broadcast quality servers without impact to post-production operations.


Local Unit

  • Host Connection

    • One male 15-pin HD / one male USB Type A connectors.
    • Supports any USB-enabled PC, SUN or MAC computer, or NTI UNIMUX KVM switch
  • Local Access

    • Crisp and clear 1920x1440 video resolution.
    • One female 15-pin HD connector.
    • Two female USB Type A connectors.
    • NTI recommends using identical keyboards and mice at local and remote units.
      • Supports most wireless keyboards and mice.

Remote Unit

  • Supports resolutions up to 1920x1440; refer to the resolution chart below for resolutions at different lengths.
  • One female 15-pin HD connector.
  • Two female USB Type A connectors.
  • The ST-C5USBV-300 will only work with USB keyboards and mice. It is not designed to support other USB devices.
    • Keyboard and mouse must be of the same platform.
    • Supports most wireless keyboards and mice.

Video Quality Adjustment

  • Video quality adjustment for different lengths of CAT5/5e/6 cable is done manually.


  • Use CAT5, CAT5e or CAT6 UTP straight through cable for TIA/EIA-568B wiring terminated with standard RJ45 connectors.
  • Cables not included.


  • 110 or 220 VAC at 50 or 60 Hz via AC adapter.


  • Operating temperature: 32°F to 100°F(0°C to 38°C).
  • Storage temperature: -20°F to 140°F (-30°C to 60°C).
  • Operating and Storage Relative Humidity: 17 to 90% non-condensing RH.


  • WxDxH (in):3.5x3.1x1.3

Regulatory Approvals

  • CE
  • RoHS


  • Two years

Application Drawing - USB KVM Extender via CAT5 

(Please click the image to enlarge)

Distances and Resolutions for CAT5/CAT5e and CAT6 Cables
10001024x768 at 60Hz
9001280x1024 at 60Hz
7001600x1200 at 60Hz
4501920x1440 at 60Hz
10001024x768 at 60Hz
8001280x1024 at 60Hz
6001600x1200 at 60Hz
4001920x1440 at 60Hz



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