PCI Express Base Specification Revision 2.0 dual-lane (x2) Compliant with Universal Serial Bus 3.1 specification Gen2 Compliant with xHCI (eXtensible Host Controller Interface) specifications Revision 1.1. Compliant with PCI Bus Power management interface Specification Revision1.2 Compliant with USB Attached SCSI protocol Revision1.1 Supports simultaneous operation of multiple USB 3.1, 3.0, USB 2.0 and USB 1.1 devices Supports USB data transfer rate of 10G/5G/480/12/1.5 Mbps. Expands dual external USB3.1 Super-Speed plus Type-C ports on the system Each USB port supplies maximum +5VDC / 900mA power output to USB device