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We recommend OWC HDD Installation tools & SMC Compatibility Solution for all Apple 2011 iMac 21.5" and 27" Models (Mfr P/N: DIYIMACHDD11) from Other World Computing for $49.50 as a suitable alternative.

OWC Internal HDD DIY Kit for All Apple 21.5" iMac 2011 Models
Custom iMac HDD power cable with an in-line digital thermal sensor module, 2 suction cups for the outer glass removal, NewerTech 11-Piece Toolkit and NewerTech Microfiber Pro Cleaning Cloth

OWC Internal SSD DIY Kit
Already have all the tools necessary to perform this upgrade?
Close to maxing out your 500GB to 1.0TB factory-installed hard drive? With the OWC Internal HDD DIY Kit you can replace your old hard drive on your own with up to a 4.0TB drive (sold separately) for up to 8x more storage and backup capacity! And if you already have all the tools necessary to perform the upgrade, you can simply purchase the cable and mounting set separately here. The kits are certified to successfully pass the Apple Hardware Test.

Before attempting to perform this installation, please watch the instructional video in its entirety to determine your ability to perform this complex procedure. OWC assumes no responsibility for damage that may occur during the install. Technical support for this DIY product consists only of the video.
Turnkey Upgrade Installation Program
While OWC encourages the DIY philosophy, this is a very difficult install that requires advanced skills. If, after watching the how-to video, you are not fully confident of your ability to add an SSD to your 2011 21-inch iMac, you can choose to have OWC "Do It For You" via our Turnkey Upgrade Installation Program.
Includes:
  • Custom iMac HDD power cable with an in-line digital thermal sensor module
  • 2 suction cups for the outer glass removal
  • NewerTech 11-Piece Toolkit
  • NewerTech Microfiber Pro Cleaning Cloth

Includes

  • Custom iMac HDD power cable with an in-line digital thermal sensor module
  • 2 suction cups for the outer glass removal
  • NewerTech 11-Piece Toolkit
  • NewerTech Microfiber Pro Cleaning Cloth

NOTE: This kit contains consumable and/or one time use components and therefore is not covered by any warranty. If you have any concerns about your ability to perform the upgrade, you can return the unopened kit for a refund. The 11-Piece Toolkit (except for nylon pry tool and Microfiber Pro cleaning cloth) included with this kit are covered by a 1 Year Warranty.

Gallery

This kit is compatible with... Learn how to find your Mac's model ID
iMac Intel
iMac (21.5-inch Mid 2011)
(May, 2011)
Model ID: iMac12,1
2.5GHz i5, 2.7GHz i5, 2.8GHz i7

Customer Ratings

Write a Review 5 / 5 1 out of 1 (100%) reviewers would recommend this product
Verified Buyer
Reviewer: Anonymous Location: Toronto Age: 45-54 Experience Level: Power User Owned Product: over 6 months
Rating: 5/5 Excellent January 11, 2016 OWC is a master at putting together kits for my mac, and this one is no exception. Easy to follow instructions, and includes EVERYTHING I needed to swap out my hard drive in my iMac. Recommended.

I would recommend this item to a friend!

OWC Internal HDD DIY Kit for 21.5" Apple iMac 2011 Models Mfr P/N: DIYIM21HDD11 OWC SKU: OWCDIYIM21HDD11 OWC DIY Kit for all Apple 21.5" iMac 2011 Models for replacing the main hard drive. Includes all cables and tools necessary for installation. Hard drive sold separately. 1 Year OWC Limited Warranty
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