Extend your PC with PCIe slots by 4 full USB 3.0 ports (USB A) with up to 3000 mA- Data transfer in SuperSpeed with up to 5 Gbps. backwards compatible- Power supply: 5 V / 3000 mA per port max.- Chipset: VIA / VL805- Supports USB legacy function- USB Attached SCSI Protocol (USAP) Mode- Plug and Play - no driver installation required- No external power adapter required- Supports hot plugging- Low-profile slot bracketThis full USB 3.0 host controller extends your PC with PCI slots by four USB 3.0 connections. Power supply is provided via the PCI express slot and supplies a maximum power output of 3.000 mA for each USB port. Use bus speeds of up to 5 Gbps with USB SuperSpeed. backwards compatible for older USB devices with Hi-Speed. Full Speed & Low Speed. Connect USB devices such as printers. scanners. cameras or an external hard drive. Supports hot plugging & Plug and Play - no driver installation required. Enjoy the fastest SuperSpeed data transfers with the DIGITUS® USB 3.0 PCIe card and copy large quantities of data in a very short time.