Features: Experience fast data transfers up to 5Gbps with this PCIE3.0 USB expansion card, featuring 4 highly speed port for simultaneous device connectivities. Engineered with a builts in power connectors and optimized heat dissipation, this plugs and play USB hubs card supports Window/Linux systems without driver. Ideal for gamers, designers, and multitaskers needing stable USB3.0 expansion to connect peripherals like printers, headsets, and external drive. upgrades your desktop PC connectivities in homes offices or gaming setups, effortlessly managing multiple devices while maintaining high performances. compactly and universally compatible, this USB expansion card seamlessly integrates into any chassis, delivering reliable power management and future proof scalability. Specifications: Component:PCB+Metal Size:Approx.120x66mm/4.72x2.6inch 2OptionType; Use main control chip:via Comply with PCIExpress specification Revision1.1, with bus bandwidth of 2.5Gbps; Comply with USB specification Revision2.0; Comply with USB OHCI interfaces protocol Revision 1.0a; Comply with USB EHCI interfaces protocol Revision 1.0; The external power supply interfaces provides strong power to the USB bus; All interfaces can achieve highly-speed (480Mbps), full-speed (12Mbps), and low-speed (1.5Mbps) data transmission; Plugs and play, the device supports hot plugs and unplugs; Supports real-time insertion and unplugging of the device; Supports all USB accessories that comply with USB specifications (such as keyboards, monitor, telephone, camera, etc.); Support operating systems: Window7/ XP / 2000 / Server 2003-2008 32/64bit operating systems Package Includes: 1pc PCIE3.0 USB Expansion Card note: Please allow 1-10mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.