PHONEFIX iPhone 8 8P X USB Power Cable Adapter, iphone 8 X Battery Connector Buckle Cable, it is used for connecting USB Power supply to the motherboard battey header directly. using this USB Power Cable will provide the same function as using an on-board USB port on the motherboard.
iPhone 8 8P X Power Cable Adapter Battery Connector Buckle Cable
USB A to Motherboard / USB Port Motherboard
Plug your USB Power Supply directly to the motherboard battery Adapter