Description This Digital Audio to Analog Audio Converter is designed for either home or professional audio switching. It converts Coaxial or for Toslink digital audio signals to analog L/R audio. Available for connection to an external device such as an for amplifier via standard for RCA-style jacks. This Digital to Analog Audio Converter Adapter is small in size and very easy to install. This Digital to Analog Audio Converter: Converts coaxial or for toslink digital PCM audio signals to analog L/R for RCA and 3.5mm for Jack audio simultaneously ( not capable of being reversed). Specification: Color: Black. Housing: Full Metal. Input audio connector: 1 x for Toslink, 1 x for RCA (Coaxial). Output audio connector: 2 x for RCA(R/L), 1 x 3.5mm for Jack. 6.Powered by 5.5mm USB power cable. Consumption: 0.5W (max). Dimension: 77 * 55 * 22 mm. Note: There might be a bit color distortions due to different computer resolutions. There might be size errors due to different computer resolutions. Package include: 1 * Digital to Analog Audio Converter With AUX 3.5mm for Jack. 1 * USB power cable. 1 * User Manual(English) 1 * Optical Cable( for Toslink cable）.