Hard drive and external enclosure

I pulled a hard drive out of an old desktop WD 1TB and picked up an external enclosure to turn it into a portable drive LC-35U3. Now, when I power everything up, I can clearly hear the drive spinning, which suggests the motor is fine, but once I plug it into the USB port, the system acts like nothing happened—I've already tested this on two different machines with zero luck. It doesn't even show up in Disk Management. I am certain the drive itself is perfectly functional, so I'm at a complete loss here.

Can anyone offer some insight on how to troubleshoot this mess?😉

I finally figured it out, so here it is in case anyone else is stuck:

In Disk Management on External drive 1, I just right-clicked and selected "import foreign disk," highlighted the suggested drive, and hit OK.

The system recognized it instantly, and now it shows up perfectly fine on This PC.

It’s honestly a bit bizarre; I spent way too much time digging through Google, yet somehow this specific fix managed to evade me entirely.