661-02988) Logic Board, 3.3GHz i7, 16GB, SSD - iMac 21.5″ A1418 (Late 2015)
Apple 21.5-inch 4K iMac Teardown Reveals Upgradeable Kaby Lake CPU And RAM | HotHardware
iMac Intel 21.5" Retina 4K Display (2017) RAM Replacement - iFixit Repair Guide
New 21.5-inch iMac least repairable yet due to lack of RAM, hard drive upgradability - 9to5Mac
iMac Intel 21.5" Retina 4K Display Teardown - iFixit
Apple iMac (21.5-inch, Late 2015) review | TechRadar
Apple iMac 2010 (Mid) 21.5-inch (iMac 11,2) SSD ,Ram & OSX Upgrades - ZD Laptop Service Centre
Late-2015 Apple iMac 21.5 with 4K Retina Display/3.1GHz Intel Core i5-5675R Quad-
iMac RAM Upgrade 8GB-32GB (Late 2015) - YouTube
Apple iMac 21-inch review (late-2015): A little computer with a LOT of pixels
SOLVED: 2015 21.5" ram upgrade - iMac Intel 21.5" Retina 4K Display (2015) - iFixit
Differences Between Late 2015 iMac Retina 4K/5K Models: EveryMac.com
I teardown dei nuovi iMac 2015 confermano le difficoltà nella riparazione
21in 4K Retina iMac (2015) review | Macworld
Logic Board w/ CPU - iMac 21.5″ A1418 (Late 2015 4K)
Apple 21.5" iMac with Retina 4K Display (Mid 2017)
iMac (21.5-inch Retina 4K, 3.1GHz Intel Core i5, Late 2015) | iGotOffer
iMac 21.5" (Retina 4k, 21.5-inch, Late 2015), i5, 3.10GHz, 8GB RAM, 1TB-HD 1034033088 | eBay
Apple's 4K 21.5-Inch iMac Allows You to Upgrade RAM and CPU – Company Finally Dialing Down on Soldered Components, Reveals Teardown
Apple iMac review (21.5-inch, 2015): 4K is optional, faster hard drives shouldn't be | Engadget
Apple iMac with 4K Retina display (21.5-inch, 2015) review: Apple packs more pixels into its smallest iMac - CNET
Teardown of New 4K 21.5-inch iMac Reveals Removable RAM and Modular CPU - MacRumors
Apple iMac 21.5-Inch (2019) Review | PCMag
