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iMac Intel 27" EMC 2639 RAM Replacement

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meter_largeDifficulty

Moderate

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4

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1

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Introduction

Use this guide to replace the RAM.

Step 1 RAM

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Image 1/2: You may have to press fairly hard—keep at it until the bottom of the door pops out about 0.25" from the rear of the iMac. Image 2/2: You may have to press fairly hard—keep at it until the bottom of the door pops out about 0.25" from the rear of the iMac.

  • While holding the display steady, use the flat end of a spudger to press in on the RAM door release button, located just above the power port.

  • You may have to press fairly hard—keep at it until the bottom of the door pops out about 0.25" from the rear of the iMac.

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Step 2

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Image 1/3: Image 2/3: Image 3/3:

  • Pull the RAM access door off the back of the iMac.

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Step 3

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Image 1/3: Use your thumbs or index fingers to unlock the tray by pushing the tabs outward, away from the RAM. Image 2/3: Pull the tabs out and down, swinging the RAM tray down to a near-horizontal position. Image 3/3: Pull the tabs out and down, swinging the RAM tray down to a near-horizontal position.

  • The RAM tray is locked into its upright position with two grey tabs.

  • Use your thumbs or index fingers to unlock the tray by pushing the tabs outward, away from the RAM.

  • Pull the tabs out and down, swinging the RAM tray down to a near-horizontal position.

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Step 4

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Image 1/3: RAM modules are keyed so that they can only be installed in the proper orientation. Note where the shorter section of contacts is when removing, and reinstalling, your RAM. Image 2/3: To install a new module, insert the module into the desired slot in the tray and press it firmly in place. Push the tray back up until it locks in place. Image 3/3: Re-insert the RAM access door back into its place.

  • Remove a stick of RAM by grabbing it with two hands and pulling straight out of the RAM tray.

  • RAM modules are keyed so that they can only be installed in the proper orientation. Note where the shorter section of contacts is when removing, and reinstalling, your RAM.

  • To install a new module, insert the module into the desired slot in the tray and press it firmly in place. Push the tray back up until it locks in place.

  • Re-insert the RAM access door back into its place.

5 comments

"Note that the shorter section of contacts should be on the left when installing new modules."

Mine is flipped so the shorter section of the RAM module is on the right.

calebx - Reply

Mine is flipped too… not a mistake, is it?

Kristi Mathias - Reply

What do think about extending step4 with the following:

Please remember direction of shorter section for later installing of upgrade RAM.

or so ...

FrankSPhoto - Reply

To add:

The RAM door is not symmetrical. When putting back the RAM door, it should flush with the back. In STEP 1 photo of the RAM door it seems the RAM door is not fully flushed and aligned.

Chi - Reply

Hi, how many RAM slots are available. In the system overview there are 4 slots and only 2 of them are used with the current setup.

big blue - Reply

Conclusion

To reassemble your device, follow these instructions in reverse order.

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Walter Galan

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3 Comments

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I just purchased RAM and this guide was very accurate. Thank you.

Nicole Hamilton - Reply

Hi guys! I have to slot full with the basic amount of RAM (2 x 4 GB), can I install 2 x 8 GB in the other two slots available? I want to upgrade to 24 GB of RAM, but I don't know if there are any problem putting together 4 GB modules with 8 GB ones. I remember an old story about possible issues... Thanks for your replies! :-)

Franz - Reply

I just upgraded mine from 16GB to 32GB. The only problem with this guide is that it says the difficulty is moderate. What could be easier? It took me less than five minutes, and most of that was unplugging/replugging stuff before and after the actual RAM upgrade.

I used a screwdriver to push on the little button that opens the door, as I didn't have a spudger handy.

Jake Robb - Reply

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