OWC Mercury Installation Instructions Manual page 17

Begin assembling the new drive by placing the large right frame on the new drive.
Attach the small zero draft screw on the left, and the regular screw on the right (circled
with the large circles above). Gently slide the modem's ribbon cable through the slot
shown above, placing the modem on the screw risers circled on the left. Do the same
with the inverter board, placing it on the right, with the power connector toward the
modem card.
Reattach the 4 Torx T-6 screws you removed from the boards back onto the assembly,
securing the cards in place.
OWC Mercury Optical Drives Installation Manual Page #17