Printing, in particular, benefits greatly from USB connectivity. And, in many cases. The increased data transfer rates of USB mean the time required to transfer data to the printer is greatly reduced.
The data transfer rate is so fast it is made to be completely irrelevant.

Features 
Significantly increases communication speed
Easily installs with no port conflicts.
Reduce printer maintenance cost
Increase quality and Consistent cabling

IFA-U type : SRP-270, SRP-350, SRP-370/372