Seagate Backup Plus External Drive

[alfarom]

What size of screwdriver do I need to remove one of the case screws in a Seagate ST2000LM007 External drive? All the other screws are a different size but one is slightly smaller and I can't find a screwdriver to fit it.

[digisupport]

You need a Pentalobe 4, are you sure you want to remove that screw?
Prepare for trouble

[alfarom]

Only an old drive I'm practicing on...