... 3D 2,Chip: TP6911 3,Support Channel: 5.1 External usb sound card 1,Audio Support: DirectSound 3D2,Chip: TP69113,Support Channel: 5 ... or headphones with a microphone hole;USB interface, plug and play, instead of traditional sound card;Microphone recording function;Kara OK function ... exactly like the flash, light transparent shell, a simple USB interface devices, plug and play External usb sound card