Philmore CAT5 RJ-45 Jack to 3.5mm (1/8") Audio Connector; 70-027 Use to connect stereo amplifiers, speakers, etc Wired to provide a twisted pair for each (left and right) stereo signal CAT5 RJ-45 female jack on one end; 3.5mm (1/8") male on other end Overall length is 7" Just plug and play!