This 6 PIN cable is a accessory only for for EXP GDC Beast Laptop External Independent Video Card Dock

EXP GDC Beast Laptop External Independent Video Card Dock:
http://www.banggood.com/Mini-PCI-E-Version-V8_0-EXP-GDC-Beast-Laptop-External-Independent-Video-Card-Dock-p-1011222.html

http://www.banggood.com/Expresscard-Version-V8_0-EXP-GDC-Beast-Laptop-External-Independent-Video-Card-Dock-p-1009976.html

http://www.banggood.com/NGFF-Version-V8_0-EXP-GDC-Beast-Laptop-External-Independent-Video-Card-Dock-p-1009978.html