Specification: Origin: Mainland China Product Size: 120.00x65.00x65.00mm/4.72x2.56x2.56inch Input Interface: PC1-EX1 compatible X4/X8/X16 Compatible with: USB1.1,USB2.0; USB3.0; USB3.1; USB3.2 5G Compliant with PCI EXPRESS 3.0 base specification Compliant with Extensible Host Controller Interface (XHCI) Specification Revision: 1.0 Speed: 5Gbps Number of interfaces: USB3.0*4 Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Included: 1 x USB 3.0 PCI-E Expansion Card 1. High-Quality Gold Plating: The USB 3.0 PCI-E expansion car features high-quality gold plating, which provides strong anti-oxidation capabilities, excellent conductivity, and resistance to wear and tear. This ensures optimal performance and longevity, allowing for reliable and uninterrupted data transfer. 2. Built-in Power Module: The PCIE USB 3.0 hub adapter comes with a built-in power module, eliminating the need for external power sources. It can function normally without any additional power supply. Additionally, it is equipped with a SATA 15-pin power interface for situations requiring higher current, allowing for external SATA 15-pin power connection if needed. 3. Port Protection Design: Each port on the extender adapter card is equipped with independent protection fuses. In the event of short circuits or excessive current in external USB devices, the power supply will immediately be cut off, protecting your devices and computer from damage. After troubleshooting, the card will automatically resume normal operation. Furthermore, each port has independent voltage stabilization capacitors to ensure stable power supply for each interface. 4. High-Performance Controller Chip: The controller converter utilizes the high-performance VL805 USB 3.0 controller chip from Taiwan. This chip enhances stability, compatibility, and overall performance, resulting in improved data transfer speeds and smooth operation. 5. Enhanced Compatibility and Performance: By incorporating the high-performance controller chip and advanced design features, this USB 3.0 PCI express adapter significantly improves compatibility and performance. It allows you to connect and utilize USB 3.0 devices efficiently, ensuring seamless data transfer between your computer and peripheral devices.