This cable could convert USB 3.0 20-Pin Header to USB 3.0 A Female x 2.
Connect the 20pin header to the motherboards to save you from taking up those valuable PCI-E or PCI slots? then you can expand another 2 ports USB 3.0 A Female
Specification
1. backward compatible with USB 2.0/1.1;
2. High speed data transfer--5 Gbps;
3. Copper conductor for maximum conductivity and reliability;
4. High density double shielding for maximum rejection of EMI and RFI;
5. Support plug and play.