4 Port USB 3.0 HUB to PCI-E PCI Express Card Adapter Converter VL800 Chipset Stable and reliable Chipset VIA VLI VL800. Compliant with USB 3.0 specification Date transfer rate up to 5.0Gbps / 625MB/s. Compatible with USB 2.0 & 1.1 specification. 4 USB 3.0 type A female connectors.