You can extract the drives and put them on a standard SATA interface, but say goodbye to the data on them if the drive allows for password encryption (even if your password is blank).
For most of the external drives, you’ll want to insert a wedge at the top front of the drive casing (centre) between the 2 pieces of plastic and pry towards the rear.
Using a plastic case opening tool preferably, inset the tool at the top rear of the drive (either side) and slide from top to bottom, and then do the other side, keeping pressure at the top front pushing the 2 casings apart.
Flip the drive over top-to-bottom, and repeat prying the bottom towards the rear of the drive, and unlatching the rear.
the 2 halves should just slide apart. Put the front to the right, and rear to the left, and slide the 2 halves left and right until they disengage.
The rest of the disassembly should be pretty evident by looking inside and figuring out which way to push the rubber mounts to disengage the drive from the casing. If there is a plasic optic bringing the activity light to the front, take that out first. It should slide out towarde the front (the long way - the whole thing has to go thorugh the hile, you can’t just pop it out going backwards).
The drives will need to be partitioned and formatted before you can use them.
In some cases, depending on your system, you may need to manually assign the drive letter.