Reddit reviews Tripp Lite 1-Port USB over Cat5 / Cat6 Extender, Transmitter and Receiver, up to 150-ft.(B202-150),Black
We found 2 Reddit comments about Tripp Lite 1-Port USB over Cat5 / Cat6 Extender, Transmitter and Receiver, up to 150-ft.(B202-150),Black. Here are the top ones, ranked by their Reddit score.
Extends the USB cable distance from Computer to Peripheral to 150 feetBus Powered - no additional AC adapters requiredUses readily available Cat5/Cat5e/Cat6 cable ( not included )Transfer rates of 1.5 Mbps to 12 MbpsCompliant with USB 1.1
use baluns to convert to ethernet and run ethernet through the walls. you'll need 2 ethernet lines for HDMI and one for USB.
http://www.cablestogo.com/product/29342
http://www.amazon.com/Cable-Matters-HDMI-Extender-Single/dp/B007K7P6GO/
http://www.amazon.com/Tripp-Lite-B202-150-Extender-Female/dp/B003WO40V6/
You can get runs longer than 15 meters with some more specialized cables/repeaters. Prices right now are not terrible either.
For HDMI, a simple option would be an amplifier: Here is an example. Some out there have been verified to work well with the Rift at varying distances. (The one I linked has not, as far as I know. But if it can do 4K at 25 meters, I would imagine it would be fine).
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VR-Related USB inputs, I would probably stick with long USB 3.0 extender cables. Like this, but find one with the appropriate length.
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Non-VR related USB inputs and outputs are easy. Cat5e extenders work just fine. Example
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EDIT: Noticed the USB 3 extender link is for 25 feet and not meters... just changed a few words.