SEDNA - PCI Express 2 Port USB 3.0 Adapter - With Low Profile Bracket - (NEC / Renesas uPD720202 chipset) - Optional Power connection Built in Power supply, no need to connect external power Support Windows 8 UASP Single-lane (x1) PCI Express Throughput Rates Up to 4.8Gbps No driver needed for Windows 8 and up With low profile bracket included in package