ITEM NAME:PCI-E to usb3.0 multi-port expansion card Four-port USB3.0 desktop D3T2 U7F0 Product description: Specifications: Brand new Size: about 12.00 * 6.60 * 1.90 cm / 4.72 * 2.60 * 0.75 "(l * w * h) Number: group 1 Support for Windows xp/vista/win7/8/10 server 2008 or higher Device type :4 usb 3.0 hub pci-e adapters Interface type :usb 3.0 Data transmission rate :5.0 GBPS A super - high - speed and high - capacity data transmission solution. Stable and reliable through chipset. 3.0 revision conforming to usb 1.0 specification. Compatible with usb 2.0 and 1.1 specifications. Meet track (x1) pci-express throughput up to 5gbps. Support 2.5 GBPS pci-e full duplex channel bus. Usb 3.0 type female connector available. Plug and play and heat exchange capability. Bus mode. Most peripherals do not require external power. Pin power connectors can be used for peripherals with high current consumption, such as hard drives. Package includes: 1x4 usb 3.0 hub pci-e adapter.Interface type :usb 3.0. A super - high - speed and high - capacity data transmission solution. Number: group 1. 3.0 revision conforming to usb 1.0 specification. Device type :4 usb 3.0 hub pci-e adapters.