1. 5 Gbps: 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 rates of up to 5 Gbps (maximum) and is backward compatible with USB 2.0 1.1. 2. Anti-interference: The conductor of the USB 3.0 high-speed cable is tinned copper, and the 3-layer shielding layer enhances the stability of data transmission. The transmission bandwidth is larger and more resistant to interference. High-frequency transmission is not affected by various electromagnetic interference in the computer chassis. 3. Support Operating Systems: 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 a PCIE interface, no need to download any driver, no external power supply, built-in connection cable, connect to the interface can be used, supports hot swapping. 5. Self-Sufficient Module: Self-sufficient module, no external power supply, fully solid capacitors. Each port has an independent interface protection. The front four ports USB3.0 expansion card leads directly from PCIE to the front of the chassis, and the PCIE interface is ultra-low 90 degrees.