Remove or install feet or wheels on Mac Pro
Follow these steps to remove or install feet or wheels on your Mac Pro.
Important: Install four feet or wheels on your Mac Pro; don’t mix feet and wheels on the same computer. Additionally, your configured Mac Pro must not weigh more than 25 kg (55 pounds) if it is fitted with the optional wheel kit. If a computer on wheels weighs more than 25 kg, it doesn't comply with safety standard stability requirements. Heavier computers should rest on the standard feet.
Turn off your Mac Pro by choosing Apple menu
> Shut Down.Let the computer cool down for 5 to 10 minutes before you touch the internal components, which may be hot.
Disconnect all cables except the power cord from your Mac Pro.
Touch the metal on the outside of your Mac Pro to discharge any static electricity.
Note: Always discharge static before you touch parts or install components inside your Mac Pro. To avoid generating static, don’t walk around the room until you finish installing the expansion cards.
Disconnect the power cord.
Unlock the computer’s housing by rotating the latch counterclockwise 90 degrees.
WARNING: Do not rotate the latch while the computer is turned on; doing so may cause the computer to shut down.
Remove the computer’s housing by pulling it up by the latch.
Note: Mac Pro can’t start up if its housing is removed.
Place Mac Pro on its side, on a nonscratch surface.
Use a flexible screwdriver or bit driver with the bit that comes with the feet or wheel kit.
Place the driver through the access opening to unscrew the foot or wheel.
Hold the the foot or wheel while you unscrew it. Repeat steps 9 and 10 for all four feet or wheels.
To install a foot or wheel, align and seat the two pins in the foot or wheel with the two holes in the mount plate on the base of the computer.
While holding the foot or wheel, place the bit on the screw and use the driver to turn the bit clockwise. Repeat steps 11 and 12 for all four feet or wheels.
WARNING: Make sure that all feet or wheels are securely screwed in so that the feet or wheels don’t become loose over time.
Place Mac Pro upright on its feet or wheels, slide the housing over the computer, then turn the latch clockwise 90 degrees to lock the housing.
Mac Pro can’t start up until the housing is replaced and the latch is rotated to its original position.
Reconnect all cables and the power cord to your Mac Pro.