Displayport Cable Length Limit

Because displayport was so ahead of its time in terms of bandwidth and resolution capability when it was launched strict limits were set on what cable lengths could be certified.

Displayport cable length limit.

This decision limited confusion in the market place but set the maximum limit for a certified displayport cable at 5 metres. When using cables with two different ends the distance limit will be subject to whichever type of connector has the shorter maximum distance. The displayport standard does not specify any maximum length for cables though the displayport 1 2 standard does set a minimum requirement that all cables up to 2 meters in length must support hbr2 speeds 21 6 gbit s and all cables of any length must support rbr speeds 6 48 gbit s. For example a standalone hdmi cable can go up to 65 while a standard displayport cable can go up to 15.

For example a standalone hdmi cable can go up to 65 while a standard displayport cable can go up to 15. Using anything beyond that increases the chances of the risks mentioned previously. If you can come up with a superior manufacturing technique or a design with better signal transmission properties or a manufacturing process with better tolerances then you can make a. Therefore an hdmi to displayport cable will be stuck at 15 for its maximum length.

A standard displayport cable including the so call displayport 1 1 cables will work for any displayport configuration including the new capabilities enabled by displayport 1 2 including 4k and multi stream capabilities. When using cables with two different ends the distance limit will be subject to whichever type of connector has the shorter maximum distance. It just depends on manufacturing quality and tolerances. All standard displayport cables support rbr hbr high bit rate and hbr2 high bit rate 2 which can support 4k at 60hz.

Maximum cable length isn t something that s defined in the standard if that s what you re hoping for. While displayport offers support for cables of varying lengths the maximum cable length that dell recommends for optimal performance is 1 8 meters around 6 feet.