need help with external drive not showing up on desktop
I just installed an older model powered USB hub on my iMac desktop. When I connected a 1TB external drive (USB3.0) I previously used directly on the computer, the drive didn't show up on the Desktop (nor on my MacBookPro where I had also previously used it.) I tried Disk Utility on both computers, but it didn't register so I was unable to Mount it. I tried a thumb drive and got the same problem on both computers. Needless to say I've trashed the hub! Suggestions on how to recover the drives??
MacBook Pro 15″, macOS 10.13