For the terminals directly connected to the motherboard, unscrew eight (PH #1), 9 mm screws (two located on the top back side, two in the center of back side of device right above the battery cover, and four under the rubber feet).

An electronics screwdriver narrow enough to fit in hole (3.5mm diameter), but long enough to reach the screws (at least 2cm) will be required to unscrew the two screws in the center of back side of the device.