I doubt usb 2 is your problem.
Transfer to/from disc is going to be slow.
What dvd unit do you have?
Make and model.
What is the type of disc you are using and what is the speed rating of the disc your using?
am looking for an external dvd player or writer with usb 3.0
will it be faster than usb 2.0 or should I stick with my external dvd writer with power supply?