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iMac Intel 27" EMC 2546 Hard Drive Replacement

Replace the hard drive in your Late 2012 27" iMac.

Replacing the hard drive requires separating the display and removing the left speaker.

This guide also includes steps to upgrade your iMac's hard drive with a SSD. It describes how to install the SSD's temperature sensor so that the Mac's fans will operate at the correct speed.

Before beginning any work on your iMac: Unplug the computer and press and hold the power button for ten seconds to discharge the power supply's capacitors.

Be very careful not to touch the capacitor leads or any exposed solder joints on the back of the power supply.