InstaMusician 3 XLR Male plus 1 BNC Male Pigtail with Ethercon

The SDS903 is an "InstaMusician" that features 3 XLR male connectors and 1 BNC male connector each at the end of a 3 foot cable. The cable is connected to a metal enclosure that has an etherCon RJ45 jack.

The etherCon RJ45 is to connect a Cat5e, or better, UTP cable and at the other end of the UTP cable you connect to the etherCon RJ45 jack of the SDS904 InstaMusician.

By connecting the SDS903 and SDS904 together it allows you to send three audio signals and one composite video signal over a single Cat5 UTP.