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The StarTech.com HDMM20MA is an active HDMI cable designed for users needing to extend HDMI connections up to 20 meters (66 feet) without signal degradation. Its key benefit is reliable, long-distance 4K video and audio transmission, ideal for home theater or office A/V installations. A key caveat is its unidirectional architecture, requiring careful installation in the correct direction to function properly. This cable features built-in signal amplification, CL2 rating for in-wall use, and supports up to 4K resolutions at 30Hz.
| Colour | Black |
|---|---|
| Model Part Number | HDMM20MA |
| Brand | StarTech.com |
No, the StarTech.com HDMM20MA features built-in amplifier circuitry that actively boosts the HDMI signal without the need for external power.
This cable supports resolutions up to 4K x 2K (3840 x 2160) at 30Hz. It also supports 1080p resolutions at up to 120Hz.
Yes, the cable is CL2 rated, making it compliant and safe for in-wall installations in residential and office environments.
This is an active, unidirectional cable. You must install it in the correct direction. Connect the HDMI connector labeled 'TV' (or the display-side connector) to your display device, and the other connector to your HDMI source device.
This cable complies with HDMI version 1.4b.
Yes, this cable supports the Audio Return Channel (ARC) feature.
The AWG wire size is 28.
The cable features aluminum mylar foil shielding to protect against electromagnetic interference.
Verify the cable is connected in the correct direction (Source to Display). Ensure both HDMI source and display devices are powered on and set to the correct input. Test with a shorter, known-good HDMI cable to rule out issues with the source or display.
Check that both HDMI connectors are fully seated in their ports. Ensure the cable is not bent sharply or damaged. If the cable is in-wall, confirm it is not being pinched or subjected to excessive tension. Try reconnecting the cable at both ends.
Confirm that both your source device and display support the desired resolution and refresh rate. Ensure the source device is configured to output the maximum supported resolution and refresh rate. Verify the cable is installed correctly, as incorrect orientation can sometimes limit performance.
Power cycle both the source and display devices. Ensure the HDMI cable is fully inserted into both ports. If using the HDMI Ethernet Channel, ensure it is enabled on both devices.
Setup:
This cable features a unidirectional architecture. It is crucial to connect the cable in the correct direction. Look for the connector labeled "TV" or the display-side connector and attach it to your display device. The other end, typically labeled "Source," should connect to your HDMI source device (e.g., Blu-ray player, computer, gaming console).
Compatibility:
Care:
To maintain optimal performance and longevity:
