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Hi there. I would just like to confirm that this particular SSD is compatible with my 21.5” late 2012 iMac before I buy it. Kingston A400 SSD 120GB 240GB 480GB 2.5 inch SATA III HDD Hard Disk HD SSD Notebook PC 120 240 480 G Internal Solid State Drive Thanks.
From the basic specs it does appear to be a workable SSD replacing your current HDD. Its an older generation so its SMART services are limited and the I/O speed is not the greatest. Review this review Kingston-A400-240GB If you jump to this view you’ll see the better drives SSD BenchMarks. Personally I would stick with either Crucial or Samsung 2.5” SSD’s as they are more aggressive in supporting the newer version of SMART and have great performance. Yes, they will be a bit more but on the long haul are a better bet. iFixit offers an upgrade kit with all of the needed supplies and tools! iMac Intel 21.5" (Late 2012-2019) SSD Upgrade Kit and here’s the guide you’ll need to follow iMac Intel 21.5" EMC 2544 Hard Drive Replacement
