Speed up your computer using this rugged SSD drive from SanDisk as an alternative boot volume. The speeds it can achieve are awesome and it's ok with water and dust.

The SanDisk Extreme PRO Portable with USB4 is the fast, rugged, and compact external SSD that’s powered it all, even if it technically underperforms.

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!