Upgrading iMac Intel 21.5" EMC 2544 RAM Memory

Archived Guide

Archived Guide

This guide is retained solely for historical purposes. Use the updated version of the guide to perform your repair.

Member-Contributed Guide

Member-Contributed Guide

An awesome member of our community made this guide. It is not managed by iFixit staff.

  • Author: jimenezser
  • Time required: About 1 Hour
  • Difficulty: Difficult

Upgrade up to 16 GB of RAM memory in your 21.5" iMac

All photos are property of iFixit

Image #1

Edit Step 1 Unglue the screen  ¶ 

  • First you need to remove the glue from the edge of the iMac

  • Use a Guitar Pick around the screen to remove the glue

  • Be careful not to damage the iSight camera

Image #1

Edit Step 2 Screen  ¶ 

  • Once you are sure the adhesive is removed, use two heavy suction cups to lift the screen

  • Unplug these cables:

    • DisplayPort Cable

    • Power Cable

  • Lift the screen from the iMac

Image #1

Edit Step 3 Adhesive  ¶ 

  • Remove the gray tape from the iMac and the screen itself

  • When reassembling the iMac, put double sided tape on the screen and the iMac

Image #1

Edit Step 4 Hard drive  ¶ 

  • Remove the four Torx T10 screws

  • Unplug the SATA cables and remove the hard drive

Image #1

Edit Step 5 Fan  ¶ 

  • Remove these 3 Torx T10 screws

  • After you remove the screws, remove these cables

    • Fan Cable

    • Unstick and unplug the camera cable

  • After you remove the fan, remove the hard drive bay removing a single Torx T10 screw

Image #1

Edit Step 6 Power board  ¶ 

  • Remove these 2 Torx T10 screws

  • Unplug these 2 cables

  • Unplug 2 more cable below the power board by pressing the clip

  • The power board is hard to remove from its place, remove it carefully

Image #1

Edit Step 7  ¶ 

  • Remove the cables out of the clip

Image #1

Edit Step 8  ¶ 

  • Unplug these 4 antenna connectors

    • When reassembling be sure that the connectors are in the same place

  • After that, remove these two Torx T10 screws

  • Move the speaker and unplug the cable from the logic board

  • Remove these other cables

  • For finish, remove these four Torx T10 screws

Image #1

Edit Step 9 Logic Board  ¶ 

  • Unscrew 3 Torx T8 screws from the heatsink, then remove the logic board from the iMac

  • Be careful not to damage the SD card reader with the screw mount

Image #1

Edit Step 10 RAM memory  ¶ 

  • Flip the logic board over and release the tabs from each side of the RAM

To reassemble your device, follow these instructions in reverse order remembering to re-glue the screen.

For more information, check out the iMac Intel 21.5" EMC 2544 device page.

Required Tools

TR8 Torx Security Screwdriver

$5.95 · 50+ In stock


$2.95 · 50+ In stock

Heavy-Duty Suction Cups (Pair)

$14.95 · 50+ In stock

iFixit Opening Picks set of 6

$4.95 · 50+ In stock

Related Products

PC3-12800 2 GB RAM Chip

$14.95 · 18 In stock

PC3-12800 8 GB RAM Chip

$89.95 · 8 In stock

Comments Comments are onturn off

Color the heatsink screws. I missed it for the longest time (that it was the black piece next to the board).

Scott Auch, · Reply

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