Use the point of a spudger or your fingernail to push on alternating sides of the power connector's sliding connector to walk it completely out of its socket near the left hinge.

Take a Picture: Before removing the cable, you may want to take a photo of the wiring for easy reassembly.

During reassembly, make sure the side of the connector marked with a black dot is facing up before reconnecting the cable. You may also want to take