Features 5 Gbps High-Speed Transmission: 4-port USB3.0 expansion card, supports full-height chassis/half-height chassis (5 Gbps high-speed transmission). VL805 USB3.0 Main Control Chip: VL805 USB3.0 high-performance main control chip, making operation more stable, compatible, and product performance greatly improved. Independent Protection Insurance: Each interface on the PCIE expansion card is equipped with independent protection insurance to protect the equipment and computer from damage. After troubleshooting, the independent voltage-stabilized capacitor will automatically reset to ensure stable power supply. Power Supply Module Design: The USB expansion card comes with a power supply module design, which can be used normally without external power supply. It can be powered by an external SATA 15PIN. High Gold Plating: The USB 3.0 PCIE expansion card has high gold plating, strong oxidation resistance, good conductivity, and wear resistance. Specification Item Type: USB 3.0 PCIE Expansion Card Material: PCB Input Interface: PCI-E X1 Compatible with X4/X8/X16 Compatible: USB1.1, USB2.0, USB3.0, USB3.1, USB3.2 5G Complies With: PCI EXPRESS 3.0 Basic Specifications Compliance: Extensible Host Controller Interface (XHCI) Specification Revision 1.0 Speed: 5 Gbps Interface Quantity: 4 x USB3.0 Package List 1 x USB 3.0 PCIE Expansion Card 1 x Bracket 1 x Screw