PCI Express Card > 2 x internal USB 3.1 Gen 2 key A 20 pin female Chipset: Asmedia ASM2142Base on PCIe Gen 3 X 2 Support two ports total up to 16 Gbps Power supply via PCI Express interface or via SATA 15 pin power connector Supports extensible Host Controller Interface (xHCI) specification 1.1 Compliant with USB Attached SCSI Protocol (UASP) Rev. 1.0 PCI Express Card > 2 x internal USB 3.1 Gen 2 key A 20 pin female 1 x SATA 15 pin power plug21338 7/7-64/8.1/8.1-64/10/10-64 Windows ex Kernel 4.4.x Linux DAT A transfer rate up to 10 Gb/s 85325 USB 3.1 Gen 2 key A 20 pin male > Type-A female 85326 USB 3.1 Gen 2 key A 20 pin male > Type-C™ female Optional connecting cable 1 x PCI Express x4, V3.0 2 x USB 3.1 Gen 2 key A 20 pin female