Restoring from backup

WD External Drives External Drives for Mac
2

What software did you use for the backup?

Assuming you used Time Machine, you can go to the drive an pull individual files if you want

the backup folder will show the computer name 

this an alternative when you can not retrieve the entire backup

not sure if you can restore to another drive then the internal drive on the Mac with TM ,  but manually you can transfer files to any place