Features:
100% brand new and high quality!
PCI-E Express to USB 3.1 Type A Dual USB Port Add on Expansion Card Adapter 
Dual USB 3.1 10Gbps Type A external port
Connect to PC power supply with 4 Pin Power Connector
Extends the USB 3.1 from mainboard to an idle floppy drive space.

Specifications:
Transfer Rate: 10Gbps，5Gbps，480Mbps
Fully compatible with USB 3.1， USB 3.0， USB 2.0
Supports for Windows Vista / 7 / 8 /8.1
Need one Available PCIe 4x，8x，16x Slot
Need Available 4Pin Power connector from your PC Power supply
Size: approx. 8cm x 12cm
Color: Green
Net Weight: 45g

Package includes:
1 x PCIE USB 3.1 Adapter
1 x Driver CD