5Gbps: The panel size is 3.5 inches, and the chassis for expanding the optical drive provides four external USB 3.0 SuperSpeed ports. SuperSpeed USB 3.0 supports data transmission speeds of up to 5Gbps (maximum) and is backward compatible with USB 2.0 1.1 Anti-interference: The conductor of the 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 to interference. High-frequency transmission is not affected by various electromagnetic interferences in the computer chassis. Supported : Supports for XP 32 64, Windows7 32 64, 8, Windows8.1, Windows10 and other operating systems. Simple and convenient: A motherboard with a PCIE interface is required, no driver needs to be downloaded, no external power supply is required, built-in connection cable, plug in the interface and it can be used, hot-swappable is supported. Self-powered module: Self-powered module, no external power supply required, all-solid-state capacitors, and each port has interface protection. The front four-port USB3.0 expansion card is directly connected to the front of the chassis from the PCIE, and the PCIE interface is at an ultra-low 90 degrees. Item Type: PCIE to USB 3.0 PC Front Panel Bus Mode: PCIEx1 Interface (PCIE x1 x4 x8 x16 Compatible) Expansion Interface: USB3.0x4 Installation Position: Front Floppy Drive Position Installation Cable Length: . 60cm Transfer Rate: USB 3.0 Super Acceleration (5Gbps) Colour:Black Material:Plastic+Iron Package Contents: 1 x Front Panel 5 x Screw 1 x Screwdriver Only the above package content, other products are not included. Note: Light reflection 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.