Gold Touch USB-RJ45 Extender
Gold Touch USB-RJ45 Extender.

With a USB extension, length is an electrical limit rather than a matter of convenience: the longer the run, the more speed and available power fall off, and past a few metres an active extension with a built-in repeater is required. Match the USB version to the device at the far end, remembering that a camera or drive draws far more current than a keyboard.
Product identification
Manufacturer part number: E-USB-EX. Use it to confirm that accessories and spare parts match.