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Extender for HDMI and USB over Single Cat-5


The HDKVM ELR from Gefen extends HDMI, KVM (keyboard, video, and mouse), and USB over a distance up to 330 feet (100 meters) using one CAT-5e cable.
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The HDKVM ELR from Gefen extends HDMI, KVM (keyboard, video, and mouse), and USB over a distance up to 330 feet (100 meters) using one CAT-5e cable. Hi-Def resolutions up to Ultra HD 4Kx2K (3840 x 2160 @ 30Hz), 1080p Full HD, and 1920 x 1200, and USB 2.0 are supported. The Receiver unit connects to an HDTV display using HDMI and also allows the connection of up to three USB devices, providing access to printers, scanners, cameras, external storage media, Digital Signage, and automated control systems. This product uses Gefen ELR (Extra Long Range) Technology based on HDBaseT®, allowing HDMI and USB signals to travel along the same CAT-5e cable, reducing cabling costs in addition to providing easier and more reliable installation.   

Simply place the HDKVM ELR Sender unit next to the computer source and use the included HDMI cable to connect the computer to the Sender unit. Use the supplied USB cable to connect the USB host (source) device to the USB port on the Sender unit. Connect the Receiver unit to an HDTV display with an HDMI cable. Connect the USB devices to the Receiver unit. Use one CAT-5e cable, up to 330 feet (100 meter), to connect the Sender unit to the Receiver unit. Connect the included locking power supplies to the Sender unit and Receiver unit, and then connect both power cords to available electrical outlets.   

NOTE: This product is Ultra HD 4K x 2K compliant.

Gefen EXT-HDKVM-ELR Includes:   

  • (1) HDKVM ELR extension for HDMI and USB Over One CAT5 (Sender Unit) (EXT-HDKVM-ELRS)   
  • (1) HDKVM ELR extension for HDMI and USB Over One CAT5 (Receiver Unit) (EXT-HDKVM-ERR)   
  • (1) Locking HDMI Cable (CAB-HDMI-LCK-06MM)   
  • (1) 6 ft. USB Cable (CAB-USB-6)   
  • (2) 5V DC Power Supplies (EXT-PS54AULPN)   
  • (2) AC Power Cords (CAB-POWERCORD-US)   
  • (1) Quick-Start Guide (QSG-HDKVM-ELR)    

Gefen EXT-HDKVM-ELR Features:

  • Extends HDMI and USB up to 330ft (100 meters) over one CAT-5 cable   
  • Supports resolutions up to Ultra HD 4K x 2K (3840 x2160 @ 30Hz) and 1080P Full HD   
  • Supported HDMI features:   
    • HDCP-compliant   
    • 12-bit Deep Color   
    • LPCM 7.1 audio, Dolby® TrueHD, Dolby Digital® Plus, and DTS-HD® Master Audio™ pass-through   
    • 3DTV pass-through   
    • CEC pass-through   
    • Lip Sync pass-through    
  • Supports up to 30 Mbps when using USB 2.0   
  • Backward-compatible with USB 1.1   
  • EDID management for rapid integration of source and display devices   
  • Field-upgradeable via mini USB-port   
  • Supports any Operating System   
  • ELR and HDBaseT® technologies allow extension up to 330ft (100m)   
  • Locking power supplies   
  • 1U tall, half-rack width enclosures are rack-mountable using EXT-RACK-1U   

Gefen EXT-HDKVM-ELR Specifications:   

  • Maximum Pixel Clock: 300 MHz   
  • Maximum TMDS Clock: 300MHz   
  • Video Input Connector (Sender): HDMI Type A, 19-pin, female, locking   
  • Video Output Connector (Receiver): HDMI Type A, 19-pin, female, locking   
  • USB Connector (Sender): (1) Type B, female   
  • USB Connector (Receiver): (3) Type A, female   
  • Link Connector (Sender / Receiver): RJ-45, shielded   
  • Service Connector for field upgrades (Sender /Receiver): USB mini-B   
  • Power Supply (Sender / Receiver): 5V DC, locking   
  • Power Consumption (Sender / Receiver): 10W(max.)   
  • Operating Temperature: +32 to +104 °F (0 to +40°C)   
  • Dimensions (W x H x D): 8.5" x 1.75" x 4.5" (216 x 45 x 114mm)   
  • Shipping Weight: 6 lbs (2.7 kg)   

General Questions


Can I return a service part once it has been installed?


Installed service parts are non returnable, unless they are defective. All defective returns are exchange only - no money will be refunded.

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