Features: 【High-Speed Transfer Experience】Features usb3.0 connection with transfer speeds up to 5Gbps, effortlessly resolves slow large-file transfers. 【Broad Compatibility Design】Compatible multiple operating systems easily accommodating diverse device requirements. 【Stable Assurance】Constructed with durability PCB ensuring stable and secure data transmission. 【Simple Installation Structure】 not require additional tools for rapid setup, enabling users to configure the expansion card within minutes. 【Multi-Port Expansion】Provides multiple usb3.0 ports to accommodate simultaneous connection for several devices. Specifications: Component PCB Size: Standard PCIE card size, suitable for most desktop motherboard slots Supports multiple operating systems Provides multiple USB3.0 interfaces, transmission rate up to 5Gbps Backward compatible USB2.0 and USB1.1 devices Size 120x65x65mm/4.72x2.55x2.55in Package Includes: 1PC Desktop PCIE to USB3.0 expansion card 4pcs Installation screws (M3×5mm) 1PC Chinese-English bilingual user manual note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.