Use your T5 Torx driver to remove the ten screws securing the logic board to the frame:

Six 3.8 mm screws surrounding the fans

Four 4.6 mm screws along the bottom edge

Use a 4 mm hex driver to remove the two 6 mm-long standoff screws securing the bottom corners of the logic board to the frame.

During reassembly, first thread these bolts in with your fingers, then tighten them with your driver.

Use a T6 Torx driver to remove the two 6 mm screws securing the heatsink and logic board to the frame.