used as mouse pad, play music, 4 port usb 1.1 hub, 2 stereo speaker 1,USB1.1 compatible, support data tansfer rate of 1.5/12 Mbps2 ... ,internal microphone for direct talk on internet.10, used as mouse pad11, black compact panel and smooth surface suitable for all ... : 5V USB line or DC 5V adapter(no included) USB1.1 music mouse pad 2 stereo speaker Mic 4 hub