DVDFAB_HD with HD with USB2 HD = slooow

I have been backing up my DVDs to Hard drives for some time now, using DVDFAB-HD, I currently have v5.2.3.2, DVDFAB is assume and I am very thankful that it is available and updated as needed. THANK YOU!! to the creator…

I have started backing up to and external USB hard drive. This is a Seagate SATAII drive in a Thermaltake “BlacX” enclosure attached to the USB2 port on the back of my PC.
Problem is the time it takes to back a movie up. If I backup to an internal drive, it is about 14min to complete, now it is taking about 3+ hours.

Can I/should I be getting faster copy speeds with this set up?

Thanks in advance,