The main hurdle with installation was that there were no external drive cases for the special small-outline SSD modules that Apple uses in the MacBook Air.

So what if you've done everything you can, but your iMac is still sluggish? Grab a speedy external SSD and do an OS X brain transplant!

TLDR; yes, it is possible to add an SSD to a 2011 27" iMac without going through too much hoopla. Between everyone having issues finding parts, non-workable guides (due to parts), and general ...

The Sonnet M.2 4x4 PCIe SSD makes it possible to add four M.2 SSDs to the Mac in a RAID 0 setup for ridiculously fast PCIe storage.

A new SSD inside an older iMac, MacBook, Mac mini, or Mac Pro will lead to much faster OS X performance, app loading, restarting, and file accessing.

Apple doesn’t let you upgrade the Mac mini with inexpensive third-party components such as RAM or internal storage, and it prices its custom-build options at the very high end of affordability.

The Mac Pro as it ships is limited to the Apple SSD modules purchased with the machine — but the Promise Pegasus R4i and Pegasus J2i are two options for adding enormous quantities of storage ...