Features: 1.5Gbps: The panel measures 3.5 inches and is used to expand the chassis of the optical drive, providing four external USB 3.0 SuperSpeed ports. SuperSpeed USB 3.0 supports data transfer speeds up to 5Gbps(maximum) and is backward compatible with USB 2.0 1.1. 2.Anti Interference: The conductor of USB 3.0 high speed cable is tinned copper, and the 3 layer shielding layer improves the stability of data transmission. The transmission bandwidth is larger and more resistant to interference. High frequency transmission is not subject to various electromagnetic interference in the computer chassis. 3.Support Operating System: Support For Windows XP 32 64, for Windows7 32 64, for Windows 8, for Windows8.1, for Windows10 and other operating systems. 4.Simple and Convenient: Requires a motherboard with PCIE interface, no need to download any driver, no external power supply, built in connection cable, plug into the interface can be used, support hot swap. 5.Self Powered Module: Self powered module, no external power supply, full solidly state capacitors Each port has an independent interface protection. The front four port USB3.0 expansion card leads directly from the PCIE to the front of the chassis, and the PCIE interface is ultra low 90 degrees. specification:Item Type: PCIE to USB 3.0 PC Front Panel Material: Iron Product Size: Approx. 102 x 94 x 25.8mm / 4.0 x 3.7 x 1.0in Bus Mode: PCIEx1 Interface (PCIE x1 x4 x8 x16 Compatible) Expansion Interface: USB3.0x4 Installation Position: Front Floppy Drive Position Installation Cable Length: Approx. 60cm / 23.6in Transfer Rate: USB 3.0 Super Acceleration (5Gbps) PackageList: 1 x Front Panel 5 x Screw 1 x Screwdriver