Stereo 3.5mm Male/Male Cable: This Stereo 3.5mm Male/Male Cable is an all-purpose stereo interconnect with multiple uses such as connecting your X3/X31 to a headphone output jack, or connect your digital music player to the Line In of our soundcards for recording. Length approx. 3 Ft. (95 cm) TB450-0019-01 was: TB450-1123-01