Advantages: The conductor of the USB3.0 high-speed cable is made of tinned copper, and the 3-layer shield improves the stability of data transmission. The audio interface adopts the HD Audio scheme, which has a larger transmission bandwidth, higher playback accuracy and stronger anti-interference than the AC97 of the chassis.Operating system compatibility: Windows XP / Vista / Server / 7/8/10, Linux.Simple and convenient: No need to download any driver, no external power supply, the built-in connection cable, plug in the interface and use it.The panel size is 5.25 inches, which is used to expand the chassis of the optical drive. There are 6 ports in total, 2xUSB 3.0 ports, 2xUSB 2.0 ports, 1x HD audio output port, 1x microphone input port.colour:BlackMaterial:ABSsize:14.8 x 9.9 x 4.2cmPackage Contents:1 x USB front panel hubOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.