Features: brand new and high quality for Comply with: universal serial bus 3.0 standard. Usb 3.0 interface has a transfer rate of up to 5gbps and is backward for usb 2.0/1.1. 7 TLG of usb devices to be connected at the same for time. The usb interface can provide 5v2a power for external devices. With two power supply modules, no additional power supply is required. Support linux/for windows xp/7/8/8.1/10 and 32-bit or 64-bit whql certified driver. Specifications: Type: 7 Ports Usb3.0 PCIE Expansion Adapter Card Compliant with: PCI for express standard version 2.0. for Comply with: universal serial bus 3.0 standard. Usb 3.0 Speed : 5Gbps and is backward for usb 2.0/1.1. Power: 5V 2A Size: Mixed Support : linux/for windows xp/7/8/8.1/10 and 32-bit or 64-bit whql certified driver Package Includes: 1 PC x 7 Port Usb3.0 Pci for Express Card note: Please allow 1-3mm error due to manual measurement and there will be different color as different display, please understand. Thanks.