A super fast and high-capacity data transfer solution. Stable and reliable VIA Chipset . Compliant with USB 3.0 specification Revision 1.0 . Compatible with USB 2.0 & 1.1 specification. Compliant with Single- (x1) PCI-Express throughput up to 5Gbps. Supports 2.5Gbps PCI-E bus with full duplex channel. 4 USB 3.0 type A female connectors available. Plug & play and hot swapping capability. With power module and no external power required for most of peripherals. Specification: Device Type: 4 Port USB 3.0 HUB PCI-E Adapter Interface Type: USB 3.0 Data Transfer Rate: 5.0 Gbps Dimension:. 12.00 x 6.60 x 1.90cm/4.72 inch x 2.60 inch x 0.75 inch(L*W*H) Support XP / Vista /Win7/8/10 Server 2008 or later Colour:black Material:PCB+metal Package Contents: 1 * 4 Port USB 3.0 HUB PCI-E Adapter Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.