PCI-E 1x to 16x Mining Machine Enhanced Extender Riser Adapter with USB 3.0 & 6pin SATA Power Cable
3.0 USB length:60cm 
With 4 x FP solid capacitors, making graphics power supply more stable and secure 
With SATA 15pin Male to 6pin power cable,strengthen power supply,
so that graphics power from the motherboard independent,so multi-card reduce motherboard burden.
PCI-E 16x slot with lock for easy removal and fixed graphics card , so that graphics will not fall from the slot
Compatible with 1x,4x,8x,16x card
Package Included:
1x PCI-E 16X adapter
1x PCI-E 1X riser board 
1x USB cable
1x SATA 15Pin-6Pin power cable