Features: 1.5Gbps High Speed Transmission: 4 port USB3.0 expansion card, supporting full height chassis/half height chassis (5Gbps high speed transmission). 2.VL805 USB3.0 Main Control Chip: VL805 USB3.0 high performance main control chip, which makes the operation more stable, compatible, and product performance is greatly improved. 3.Independent Protection Insurance: Each interface of 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 be automatically recover to ensure stable power supply. 4.Power Supply Module Design: 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. 5.High Gold Plating: USB 3.0 PCIE expansion card has high gold plating, strong oxidation resistance, good conductivity, and abrasion 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 Compliant With: PCI EXPRESS 3.0 Basic s Compliance: Extensible Host Controller Interface (XHcI) Revision 1.0 Speed: 5Gbps Interface Quantity: 4 x USB3.0 PackageList: 1 xUSB 3.0 PCIE Expansion Card 1 x Bezel 1 x Screw