You can always crack the enclosure and yank the hard drive to place it inside the actual tower (they’re just ide/sata drives connected to an adapter connected to usb).
From Mani: Actually it is not SATA hard drive. It’s a completely Laptop external Hard Drive. It’s lot smaller and there is no easy way to open it.
Then it’s a laptop hard-drive. Not really a weird form factor. I have done this personally as well. Laptop IDE and SATA adapters are commercially available in comments direct experience
Multiple instances as data recovery for various owners. This is where I go first (it isn’t worth the time to half-way try it…if the drive is truly failing jumping to the last step first is more effective and safer. i have had a drive read one and the heads refuse to un-park on the next mount…this is even more the case on laptop form factor. disassembly of desktop hd’s is simple enough, but i tend to fatfinger the laptop HDs). I appreciate your concern, but it’s just an HD dude. Slave it, copy it, fix it.
Some manufacturers do use proprietary hard drive connectors, here is a WD proprietary drive out of a usb enclosure on the left, standard is on the right.
So don’t open it unless it is a last resort.
Do you see the device in Disk Management when it is connected?