Sedna - PCI Express USB 3.0 4-Port Adapter (2E 2I (20 Pin Internal Port)) with Low Profile Bracket, NEC 720201 chipset ( Built In power circuit ) Support Win 8 / Win 10 ( no need driver for Win 8 / 10 ) 2 x external and 2 x internal USB3.0 port with 20 Pin Connectors Low Profile bracket for installation in small size HTPC case Built In Power supply, optional to connect SATA Power connector Supports Windows XP/2003/Vista/7/8/ 8.1/10