Features: High-speed data transfer: Supports the usb3.0 standard, delivering data transfer rates of up to 5Gbps. This significantly enhances data transfer efficiency for external devices, meeting demands for rapid storage and device connectivity. Double port design: Features two built-in usb3.0 ports, facilitating simultaneous connection of multiple USB devices. This accommodates diverse user requirements and boosts productivity. High Compatibility: Compatibles a wide ranges of motherboards and operating systems, supporting multiple systems to ensuring seamlessly operating across different environments. Stable Performances: Utilises premium-grade chips to ensuring stable power supply and transmission, delivering a more reliabled user experience. Simple Installation: Includes detailed installation instructions enabling effortless setup even for not technical users, while supporting plug-and-play functionality without requiring additional driver. Specifications: Cmoponent: PCB Size about 8.2x5.6cm/3.23x2.2in Supports two usb3.0 5Gbps Type：Desktop PCIE to USB3.0 Adapter Package Includes: 1PC Expansion card note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.