Features: 1.Small in size and light in weight, the digital to analog audio converter is easy to carry. 2.The connection port adopts gold?plated interface material. Provide electronic noise reduction transmission. 3.Powered by USB power cord, the product is environmentally friendly, stable and convenient. 4.With professional design and reasonable structure, the converter is easy to use and operate. 5.High quality material can make sure the durability and stability of the product. specification:Item Type: Digital to Analog Audio Converter Material: Aluminum Alloy Colour: Black Input Audio: Coaxial Or for Toslink Digital Audio Output Audio: L/R Audio Input Audio Interface: For Toslink 1 x RCA (Coaxial) Output Audio Interface: 2 x RCA (R/L) External Power Supply: DC 5V 1A (We Provide A USB Power Cord, You Can Use This Cable To Connect The Converter To The USB Of A Computer, TV, AMP Or Other Device For Power Supply.) Power Consumption: 0.5 Watts (Maximum) Converter Unit: FCC, CE, UL Power Supply: UL, CE, FCC Sampling Rate: 32, 44.1, 48 And 96 KHz Working Temperature: 0 To +70 Working Humidity: 10% To 85% RH (Non-Condensing) Storage Temperature: -10 To +80 Storage Humidity: 5% To 90% RH (Non-Condensing) PackageList: 1 x Digital To Analog Audio Converter 1 x USB Charging Cable 1 x Fiber Optic Cable 1 x User Manual NotePay attention when inserting the optical fiber cable. First remove the plastic cap of the optical fiber cable connector. The interface has a direction, the square is facing up, and the circle is facing down. Don't plug it back, it's easy to damage the fiber interface.