This product is either discontinued or we cannot get that from suppliers.
Startech Dual Port PEXUSB312A2, External USB Ports 2 - USB 3.1 USB Type-A (9 pin, Gen 2, 10 Gbps) Female, Internal Ports 1 - SATA Power (15 pin) Plug, O/S Windows 7, 8, 8.1, 10, Windows Server 2008 R2, 2012, 2012 R2, 2016, Linux 3.5 to 4.4.x LTS version only.
This USB 3.1 card lets you add two USB Type-A ports to your computer, through a PCI Express slot. It enables you to upgrade your current system by adding two USB 3.1 Gen 2 ports to your computer and giving you access to data transfer speeds up to 10Gbps.