Since I always need more drive systems available I researched long & hard to find a perfect USB 3.0 external removable system for my library of hard drives

Very good 4-bay USB 3.0 bay

less expensive USB 3.0 docks that have cost me dozens of hours doing data recovery because they would stop responding during long file

USB 3.0 is very fast.

This is the most reliable USB 3.0 hard drive dock I have ever used

This is the most unreliable USB dock I've ever used.

Additionally I have this plugged into a separate 4 port USB 3.0 PCI card in the computer so as to not overwhelm the USB bus on the system and that works very well

Stick to tried and trusted USB-only.

Additionally I have this plugged into a separate 4 port USB 3.0 PCI card in the computer so as to not overwhelm the USB bus on the system and that works very well

We had been looking for an external hard drive carrier just like this one, that would accept a raw hard(s)