Unknown Network cable recently I found a cable in my drawer which one side has a RJ45 connector with an unknown color code of red brown black white green I tried to solve it by myself but I couldn't so I upload a picture if you can tell me what it is used for. Thanks!USB and RJ45

That's no network cable.

Likely, it's a console cable, connecting a 10P10C(!) console port on a device to a USB port on a PC. It _might_ be from a UPS (usually has a key next to pin 1) but unless you can verify the pinout I wouldn't connect it anywhere.