45 ft. (14 m) HDMI Signal Booster - 4K 60Hz

HDMI® Inline Repeater & Amplifier | USB Powered | 7.1 Audio Support | YUV 4:4:4

Product ID: HDBOOST4K2

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  • BOOST YOUR SIGNAL: Use this repeater to amplify your 4K HDMI signal extending it 45 ft. using certified HDMI cables. Operating System Independent, no extra drivers or software required.
  • 4K RESOLUTION SUPPORT: Enjoy astonishing picture quality with support for 4K 60Hz at up to 45 ft. away from your video source.
  • AUDIO SUPPORT: This HDMI inline repeater supports 7.1 surround sound audio for an complete AV solution.
Your price

Use this 4K HDMI® signal booster to amplify your HDMI signal and extend it 45 ft. (14 m) using HDMI cabling.

Cable length
from source
Cable length
to display
Total cable length Maximum
82 ft. (25 m) 82 ft. (25 m) 164 ft. (50 m) 1080p (60 Hz) - 1920x1080
65 ft. (20 m) 65 ft. (20 m) 130 ft. (40 m) 4K (30 Hz) - 3840x2160
22.5 ft. (7 m) 22.5 ft. (7 m) 45 ft. (14 m) 4K (60 Hz) - 3840x2160

Maintains Ultra HD 4K Video

When you're extending HDMI over distances using standard video cabling, higher resolutions from your HDMI 2.0 devices can become unavailable after a few short feet. With this signal extender you can ensure that HDMI 2.0 resolutions up to UHD 4K at 60Hz are available even at distances up to 45 ft. (14 m). You can achieve even longer distances at lower refresh rates - up to 4K at 30Hz, at up to 100 ft. (30 m).

The signal booster works by connecting two HDMI certified cables, each up to 22.5 ft. (7 m) in length, to either side of the signal booster.

Hassle-Free Installation

With its compact design, the HDMI signal amplifier is easy to hide, for a discreet installation. By extending your video signal using HDMI certified cables, the inline booster is a cost-effective alternative to more expensive extension systems that require the installation of a CAT5 or CAT6 cabling infrastructure.

Supports Several Distances

Support for a variety of extension distances makes the 4K repeater perfect for multi-device deployment across large institutions, such as boardrooms in corporate offices, classrooms in schools, or waiting rooms in hospitals, as these applications may require varied distances in different rooms.

HDBOOST4K2 is backed by a 2-year StarTech.com warranty with free lifetime technical support.

Note: To achieve resolutions up to 4K 60Hz, your video source, display and cabling must support HDMI 2.0.


  • Amplify your 4K video signals up to 45 ft. (14 m)
  • Boost the signal strength of your HDMI video signals in classrooms, offices and boardrooms
  • Avoid network cabling to extend video signals, using this extender with standard HDMI cables

Partner Numbers

  • UPC 065030883795


Warranty Information Warranty 2 Years
Connector(s) 1 - Connector A HDMI (19 pin)
1 - Connector B HDMI (19 pin)
Environmental Operating Temperature 0°C to 70°C (32°F to 158°F)
Storage Temperature -10°C to 80°C (14°F to 176°F)
Humidity 5% to 90% RH
Hardware AV Input HDMI
AV Output HDMI
Cabling HDMI
Audio Yes
Rack-Mountable No
Daisy-Chain No
Packaging Information Package Height 1.2 in [3.0 cm]
Package Length 6.7 in [17.0 cm]
Shipping (Package) Weight 4.0 oz [113.0 g]
Package Width 5.5 in [14.0 cm]
Performance Video Revision HDMI 2.0
Max Distance 14 m / 45 ft
Wide Screen Supported Yes
Bandwidth 18Gbps
Audio Specifications DTS
Dolby Digital
Physical Characteristics Product Height 0.5 in [1.4 cm]
Product Length 1.1 in [2.8 cm]
Weight of Product 0.5 oz [15.0 g]
Product Width 2.0 in [5.2 cm]
Color Black
Material Plastic
Power Power Source Not Included (not required for standard applications)
Plug Type USB Micro-B
Power Consumption (In Watts) <2.5
What's in the Box 1 - Included in Package HDMI Signal Booster
1 ft [30 cm] Micro USB Power Cable
Quick-Start Guide



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Product Support

Talk to an Advisor

We are always ready to assist you with any questions you may have.

Live Chat (opens in new window)

Frequently Asked Questions


  1. The power adapter may not be connected at the correct unit or may not be connected at all.  Please check your product manual to see where your power adapter has to be positioned.
  2. An adapter to another video signal may be connected to the Transmitter or Receiver unit.  Please avoid any converters for the initial setup.
  3. The Cat 5 or 6 cable coming from the transmitter or receiver unit may be connected to a network switch.  Some of our video extenders will work in this configuration, but others will not. Please check your product manual to see if your model can be used connected to an IP network. For the initial setup, avoid connecting the Cat 5 or 6 cables to any network switch, hub, or router.
  4. The category of Unshielded Twisted Pair (UTP) cables may not meet StarTech.com’s requirements. Ensure at least Cat 5, 5e, or six cables are used, and they have eight wires. Some Cat 5 cables only have four wires. If using Cat 6 cables, be aware they have more twists per foot, so you may have to use shorter cable lengths if using Cat 6 cabling between your video extenders.
  5. Bundling up the UTP cabling connected to the extenders can cause crosstalk, which will prevent the video signal from showing on the display.  Unwrapping the cable should resolve this issue.
  1. Please check to see if your model has an adjustable Gain dial on the remote unit.
  2. If it does, use it to adjust the color until it is acceptable.
  3. Replace the VGA cable with a higher quality cable like StarTech.com’s MXT101MMHQ.

Compliance and safety

Compliance letters

Safety Measures

  • If product has an exposed circuit board, do not touch the product under power.
  • If Class 1 Laser Product. Laser radiation is present when the system is open.
  • Wiring terminations should not be made with the product and/or electric lines under power.
  • Product installation and/or mounting should be completed by a certified professional as per the local safety and building code guidelines.
  • Cables (including power and charging cables) should be placed and routed to avoid creating electric, tripping or safety hazards.
*Product appearance and specifications are subject to change without notice.

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