3 Pack PCI-E 1x to 16x Powered USB 3.0 GPU Extender Riser Adapter Card v002 Features: The splitter cable connects two power supplies to one motherboard Use the power on/off switch on your motherboard to power both power supply units Power more GPU's for your mining rig with 2nd power supply Great for 6+ GPU mining rigs Run 2 less expensive 850-1000w power supply instead of 1 high cost 1600w power supply For Desktop ATX power supplies, Will NOT work with server PSUs Perfect for Bitcoin Mining Builds and Dual PSU gaming. Using this adapter you can get more than 1500w for your system without paying the expensive price of a 1500 or 1600w, which also are scarce. Note: Do not use the second power supply for the motherboard. For dual input devices like video cards make sure the inputs come from the same power supply for stability. Package Includes: 3x Cable total