This Liberty Intellix INT-USB2-50H & 50C USB 2.0 Extender Set is nearly perfect and is from a working system.
It comes with the local and remote units as well as the original power supply.
Expansion: Extend up to two USB 2.0 peripherals 50 meters,
way beyond the typical 5-meter limitation by only using one CAT6 cable.
Connect various USB peripherals to your laptop or personal computer
such as web cameras, microphones, cable cards and disk drives. Compliance: Gen USB 2.0 while being fully backways compatible with USB 1.1 Data Transfer Rate: Up to 480 Mbps shared between all ports Support on Upstream Port: HighSpeed (HS), FullSpeed (FS) and LowSpeed (LS) traffic
Support on Downstream Ports: HighSpeed (HS), FullSpeed (FS) and LowSpeed (LS) traffic.USB Data Transfer Types: Supports all USB data transfer rates including Isochronous and Bulk. Complete Plug and Play: Supports all operating systems
(Windows, MacOS, Android, Linux); NO additional driver or software
required to be recognized by the computer Power: Both the Host and Client extender can be powered by
the same single power source using Power Over Cable (POC). The added
benefit of power over cable means you’ll only need one power source at
either side of your extension, great for extending USB signals to areas
where power outlets may be limited.