This cable is designed for DIGITAL audio connections it has a TOSlink (standard square type) connection on one side and a 3.5mm OPTICAL connection on the other (used for digital MP3 & CD players). Please note this cable is designed for Digital audio only and will not convert Digital signals into an analogue 3.5mm headphone connection
0.5m/50cm Cable length TOSlink Male Plug Mini-Toslink 3.5mm Digital Plug Cable Diameter: 4mm