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$70.99 off *NOW* Get Parallels Desktop Pro Edition - Windows/Multi OS Compatibility software for Mac - Only $29.00 with select OWC SSDs, HDDs, Memory, External Storage, and Optical Drives! (Limit 3 rebates, 1 rebate per qualifying item)
Must purchase with: PPDPROSUB1Y-REB29

32.0GB OWC Memory Upgrade Kit

2 x 16GB 2400MHZ DDR4 SO-DIMM PC4-19200
OWC Memory Lifetime Limited Warranty including the OWC Lifetime Advanced Replacement Program | 30 Day Money Back Guarantee
Memory Image
Product Specs:
Professional Installation Highly Recommended
While this upgrade kit itself should not void your warranty, the installation process is very complex and thus it is recommended to be performed by a trained professional.
Memory Trade in
Save money by trading in your original chips! View available memory rebates.
From the purchase date of qualifying memory from OWC, you have 60 days to trade-in your old memory for a cash rebate!
Just fill out OWC's online rebate form or contact OWC Customer Service after you receive and install your new memory.
- Please allow up to 14 Days from the time we receive your memory for testing and rebate processing.
- The OWC Rebate is for up to the same number of memory modules purchased and must be in working order.
This memory kit and included memory is for Apple iMac 4K 2017 (21.5") Models only. Memory provided in this kit is special config for 21.5" ONLY and is NOT compatible with Apple iMac 27" Models. Included memory also compatible with PC Laptops which use DDR4 2133 or 2400 modules.

Includes

  • (2) 16GB 2400MHZ DDR4 SO-DIMM PC4-19200
  • (1) OWC Screen Removal Tool
  • (2) OWC 2-1/4" Suction Cup
  • (1) Torx T5 driver
  • (1) Torx T8S driver
  • (1) Torx T10S driver
  • (1) Phillips 00 driver
  • (1) Nylon Probe Tool
  • (1) 21.5" iMac Adhesive tape set for proper display resealing
  • (1) OWC Blue Microfiber Screen 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.
Please note: This memory kit and included memory is for Apple iMac 4K 2017 (21.5") Models only. Memory provided in this kit is special config for 21.5" ONLY and is NOT compatible with Apple iMac 27" Models. Included memory also compatible with PC Laptops which use DDR4 2133 or 2400 modules.

This OWC Memory is compatible with... Learn how to find your Mac's model ID or PC specs
iMac Intel
iMac w/Retina 4K display
(21.5-inch Mid 2017)
(June 2017)
Model ID:iMac18,2
3.0GHz i5, 3.4GHz i5, 3.6GHz i7
Detailed specs
Install Videos
iMac Intel
iMac (21.5-inch Mid 2017)
(June 2017)
Model ID:iMac18,1
2.3GHz i5
Detailed specs
Install Videos

Customer Ratings

Write a Review 5 / 5 6 out of 6 (100%) reviewers would recommend this product
Verified Buyer
Reviewer: titan
Rating: 5/5 Imac 21.5 18.2 4k display January 14, 2020 Thanks guys my imac is li roadrunner installed this 2x16gb and runs perfectly great goob (Just to let you know Icenter to change the ram he told me it wil cost you 1100euro cheets for then

I would recommend this item to a friend! Customer Videos:

Verified Buyer
Reviewer: Rookie Location: Central Missouri Age: 55-65 Experience Level: Noob Owned Product: less than a month
Rating: 5/5 Straight forward install but be careful November 7, 2019 I'm a normal computer "user" but pretty mechanically inclined and wanted to upgrade my ram on my 2017 iMac 21.5 4k. I watched the video several times and took my time. I even watched the video as I was doing the upgrade. My only issues I had with the install; I needed a stronger magnetic torx drivers and I broke the tiny ZIF connector going to the microphone while reassembling. Maybe in the video if there was a bigger close up of the tiny connector, or I would have researched the particular connector, I wouldn't have broker it. I rarely use the Microphone on my desktop so not a big deal. Understanding the type of connectors was my bigger issue with the install. I see why it was rated high on the difficulty scale. knowledge of the type of connectors would be a huge benefit.

I would recommend this item to a friend! Customer Videos:

Verified Buyer
Reviewer: Gabe0071 Location: Jewett, TX Age: 55-65 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 OMG leave all my apps open as it should be January 16, 2019 Previously amazed when in upgraded to a 1TB SSD but then 8GB memory limited the number of applications I could have open at a time and the number of windows open in memory hungry Safari. Doing Online College I would have 8 or ten windows open in Safari an need to do some homework in windows Word to follow along with the examples because the school course is based in Windows Microsoft software and the MAC 2016 version is not identical which led to wrong answers. Now I can do everything without having to close applications or browser windows. Full disclosure: I did have to find software to limit CPU usage by app and process to run everything I like to use at once.

I would recommend this item to a friend! Customer Videos:

Verified Buyer
Reviewer: RonG77 Location: Upland, CA Age: Over 65 Experience Level: Power User Owned Product: 3-4 months
Rating: 5/5 Very good upgrade for our new iMac November 16, 2018 This upgrade kit saved me about $100 over buying more memory from Apple. I highly recommend it for anyone who has ability and is not afraid to take their computer apart. I would not recommend doing this if you are not competent removing and replacing boards, cables and other computer components. Be sure to clean off and remove all the old double faced tape.

I would recommend this item to a friend! Customer Videos:

Verified Buyer
Reviewer: tmgoonan Location: tmgoonan Age: Over 65 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Memory upgrade. November 4, 2018 My iMAC came with 8gb of RAM. It is not enough for post processing in Photography. 32gb is a whopping upgrade. Woo Hoo! Between the memory and the SSD drive my iMAC cooks.

I would recommend this item to a friend! Customer Videos:

Verified Buyer
Reviewer: PdxMac Location: Pacific Northwet Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Opening a 21.5" iMac is intimidating, but not overwhelming November 1, 2018 The 21.5" iMac is even more challenging to work on than the 27", but if you take your time and don't lose any screws, you can do it. The pizza-cutter screen tool is the best thing since sliced bread. Just make sure you install all the memory and disk you'll need for a while, because it's still a hassle to open the machine, and the fewer times you have to do it, the lower the chance you'll break something.

I would recommend this item to a friend! This review is from 32.0GB (2x 16GB) 2400MHz DDR4 PC4-19200 SO-DIMM 260 Pin CL17 Memory Upgrade Kit. Customer Videos:

Verified Buyer
Reviewer: sier Location: Osaka, Japan Age: 45-54 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 so far so good memory upgrade January 24, 2018 This is a cheap but reliable way of memory upgrade! Installed in iMac 2017 4k without any problems. Recommend!

I would recommend this item to a friend! Customer Videos:

Verified Buyer
Reviewer: CrVik Location: Kazakhstan Age: 25-34 Experience Level: IT Professional Owned Product: less than a month
Rating: 5/5 Great shop! December 17, 2017 This is a good upgrade kit easy install and worked fine! Thank you MacSales!

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) 2400MHz DDR4 PC4-19200 SO-DIMM 260 Pin CL17 Memory Upgrade Kit w/ Installation Tools. Customer Videos:

OWC Memory 32.0GB 2 x 16GB PC4-19200 DDR4 Kit Mfr P/N: 2421DDR4S32K OWC SKU: OWC2421DDR4S32K OWC Memory Upgrade Kit Lifetime OWC Limited Warranty Ships: Same Day
Reviews (6)
Only $186.88Matched Kit for $159.99
Add to CartOther World Computing 2421DDR4S32K In Stock, Click to Buy Now
Additional Capacities & Kits: Complete Upgrade Kit
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