The external drive is connected by eSATA cable and the motherboard supports SATA 3, but I believe this specific connection is eSATA 2.
It is definitely not USB 3.
The specific model of the external drive is Glyph Portagig62.
The footage and media were on the external, the OS and program were on the internal drive.
So you are saying have the OS on one drive, program (Adobe P) on another, render on another, and cache preview on another? 4 Drives total?