HP TouchSmart 9300 Elite All-in-One PC - Manual (Page 19)

7. Position the VESA adapter plate over the bottom of the computer stand, aligning the round cutout
with the raised circle, and align the four screw holes.
8. Use a Phillips screwdriver to tighten all four screws attaching the VESA adapter plate to the bottom
of the computer stand.
CAUTION: Do not skip steps 7 and 8 when replacing the computer stand. The VESA adapter
plate is required on the computer stand to support the weight of the computer.
Wall-Mounting your HP TouchSmart Replacing the computer stand 15