FCPX: Use an EXTERNAL Hard Drive with Final Cut Pro

This video explains how to use an external hard drive with Final Cut Pro.
The software version used in this video is Final Cut Pro 10.4

[@freshfalcon3996]

How does the speed compare working off a library on an external drive vs the internal drive?

[@rodneybrocke]

It seems about the same. They are both mechanical drives, my internal and external drives.