I'm getting a closet, that's sizable enough to have its own air-conditioning outlet. Which means, I can hide my (laud) computer in there for good, with only the silent monitors and the mouse/keyboard in my office.

I need the monitors and the other peripherals' cables to reach, though... These people let me design the custom faceplates and will gladly sell me all cables, except the longest USB and DVI cable they sell is 15 feet...

That's not enough for my case — although the office is adjacent to the closet, going through the walls directly is ruled out by the contractor (for plausible reasons). Only up through the attic from the closet and then back down into the office in the wall, where my desk is going to be.

Any suggestions? For example, people say, HDMI and DVI cables are interchangeable — is that true, or will I lose picture quality going from DVI-to-HDMI in the closet and then back from HDMI-to-DVI in the office?

What about USB? Can those cables by longer? Thanks for ideas. Yours,

doofus

Or you could check out the website linked below.
I haven't used this product. I only found it in a web search.
This is my reference for this info.

Pooh Bear