Fix Any Slow iMac 2012-2020 – Install SSD Externally


Fix speed issues on any iMac which supports USB 3.0 (iMac 2012 onwards). Use a UASP enclosure for improved speeds and reliability.

This guide is updated for Catalina/Big Sur in this video here:

► Parts:
Sabrent 2.5 Inch Sata to USB 3.0 UASP Enclosure:
Kingston A400 240GB SSD:

► Get the NEW M1 Macs here (Amazon links):

► Timestamps:
00:00 Introduction
01:40 iMac comparison
02:39 Carbon Copy Cloner:
03:24 Install enclosure and SSD
04:04 Clone internal drive to SSD
06:04 Auto-boot into external SSD
07:20 Boot test
08:10 Optional: Format internal drive
08:59 Conclusion

Amazon Affiliates Disclosure: Andrew Tsai is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.