This product can convert digital signals (Optical & Coaxial) to analog signals ( L/R RCA & 3.5mm AUX). [Noise Canceling Function]Built-in noise reduction design, high-fidelity shielding design, anti-interference, and improved sound quality. [Plug and Play]Easy to install, no software required, no need to drive.USB Power. [Widely Compatible] Applies to devices such as HD , top boxes, satellite receivers, CD / HD DVD / BlueRay players, game consoles, PS3, , , , TV. Length about: 3 meter/10ft color: Black material: plastic Package Contents: 1 x Audio Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.