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- 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 module and no external required for most of peripherals.Specification:Device Type: 4 Port USB 3.0 HUB PCI-E AdapterInterface Type: USB 3.0Data Transfer Rate: 5.0 GbpsDimension:Approx. 12.00 x 6.60 x 1.90cm/4.72 inch x 2.60 inch x 0.75 inch(L x W x H)Support Windows XP / Vista /Win7/8/10 Server 2008 or laterColour:blackMaterial:PCB+metalPackage Contents:2 x 4 Port USB 3.0 HUB PCI-E AdapterOnly the above package content, other products are not included.Note: Light reflection 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.