If it's optical, it uses a TOSLINK lightpipe optical cable.
If it's coax, it uses a 75 ohm video type coaxial cable terminated in RCA type connectors.
If you havethe same type inputs and outputs on the device you want to record and the device you want to record to, alls you need is the correct cable and you're off to the races. If you have only one type on one device and the opposit type on the other, you'll need a converter.