top of page

HDMI cable maximum length


When setting up a courtroom for an electronic presentation, you might think that having a very long HDMI cable would work to your advantage. It could give you more flexibility about where you position your tech table from the inputs for the audio-visual system. There are certainly a lot of very long HDMI cables available of 50 feet,




100 feet . . .

. . . and longer


But with HDMI cables, longer is not necessarily better. HDMI cables may be active or passive. A passive HDMI cable will allow signals to be sent in both directions. An active HDMI cable only allows data to go in one direction, and will include a processor. An active HDMI cable will get power from the device it is connected to. At a length of more than 25 or 50 feet a passive HDMI cable will no longer transmit video and document images with maximum speed and clarity.


More sophisticated audio-visual systems may route an HDMI signal from a computer with Cat 5 or Cat 6 network cables and then pass through to an HDMI cable for a display in order to prevent significant lag over long distances.

Sean O'Shea has more than 20 years of experience in the litigation support field with major law firms in New York and San Francisco.   He is an ACEDS Certified eDiscovery Specialist and a Relativity Certified Administrator.

The views expressed in this blog are those of the owner and do not reflect the views or opinions of the owner’s employer.

If you have a question or comment about this blog, please make a submission using the form to the right. 

Your details were sent successfully!

© 2015 by Sean O'Shea . Proudly created with Wix.com

bottom of page