... music, 4 port usb 1.1 hub, 2 stereo speaker 1,USB1.1 compatible, support data tansfer rate of ... 1.5/12 Mbps2,4 usb port with individual port over-current ... to 127Hi-speed devices.5,comes with 2 stereo speaker with 3.5mm plug.6,power on/off ... switch button7,LED indicator for on/off8,mircophone and speaker output.9,internal microphone for direct talk on internet ...