Use :
For DESKTOP PC on PCI EXPRESS 1X port. 
Allows you to add 2 external USB 3.0 ports to your desktop PC.

Compatibility:

Compatible with all versions of Windows (2000, XP, VISTA, seven, 8, 8.1, 10.... IN 32 OR 64 bits).

Features :

EtronTech EJ168A CHIPSET

PCIe Gen 2.0 card

PCIe 1x card, 5Gbps bandwidth
Universal Serial Bus 3.0 specification Revision 1.0 compliant
Compatible multiple instances in USB3, USB2 and USB1
Supported speeds: Low-speed (1.5Mbps) / Full-speed (12Mbps) / High-speed (480Mbps) / Super-speed (5Gbps)
Compatible Intel eXtensible Host Controller Interface (xHCI) Specification Revision 1.0
2 independent ports
Power supply via Molex connector
Hot Swap ready