Specification: Name :USB external sound card Model :CDLH0 Appearance color: dark space gray Interface type lusb2.0a male, 3.5mm female Interface version :USB2.0 Interface process: gold plating Sampling rate: 44.1/48 k @ 16 bit Sound track :2.1 sound track Transmission direction :USB revolution earphone headset 2 in 1 Shell material: aluminum alloy +ABS Product size :24mm*18mm*11mm Features: 1. USB External Sound Card: Enjoy music and chating on computer, cellphone headset also works 2. Dual Function,Listen+Talk: Make the headset can be voiced, and protect the sound card from being damaged 3. Earphone to Computer: Turn USB into 2-in-1 3.5mm audio port for listening to music and voice functions 4. Computer to Speaker: Listen to music,watch movies,and feel the immersive sound 5. Compatible with OMTP/CTIA Earphones: Solve the problem that the phone earphone only has accompaniment or background sound,microphone invalid,etc. 6. Filter Out Noise,Purer Sound: High fidelity noise reduction design to avoid transmission interference and restore music original sound 7. Smart Chip,Clearer Sound: Independent sound card chip, make sound clearer 8. Details Material: Gold-plated Interface Alloy Casing FAQ Q :Does the sound card have noise and current? A1: Check if the interface is inserted A2: Check if there is any wireless interference around. Q: Why is the sound card hot? A: The USB sound card is an independent sound card with a smart chip, so the product will be slighty hot when working,which is normal. Q: Why am I plugged in without sound? A: Check if the earphones are plugged into the sound card. If the computer does not switch automatically.go to Control Panel-Sound-Play-select USB2.0 Audio to confirm. Package Included: 1 * CDLH0 USB external sound card