I needed HDD space, not speed (like SSD's) have.
Recently bought 4TB HDD for my PS4 last week (had no room internally on its small 500GB internal HDD) and this week bought a 14TB external HDD for my Windows PC's. Certainly gonna need all this space with all of these games eating so much space.
I can't remember when - but earlier in the year, since I had no room inside the PC and all - I bought a
USB 3.2 Orico SSD Enclosure (PWM2-G2) at
Newegg for an extra M.2 SSD cheap that I had laying around. This one supports M-Key/B&M-Key. So, yeah - if you need an enclosure, make sure the SSD-key type you have's supported and that you got the right USB-type on the other end. That's a good idea, if you say got no room inside your PC and just need somewhere to stick a nice SSD drive you have b/c you bought & picked-up one cheap.
I should note: I use the external SSD's or external HDD's on PC mostly as storage. When I run games - especially recent stuff and big stuff - it's on the internal drives.
EDIT - Also got USB-based hard-drive docks for SSD's and HDD's. So, there's another idea, if you got extra hard drives just lingering - whether SSD, laptop style HDD, desktop style SSD, or whatever. Just...again, make sure whatever drive type you plan to use in the Dock, make sure the Dock supports that.