500gb drive - WD passport
3TB - Seagate Expansion desktop drive
EDIT: It's at 13.3MB/s right now
Edited by Ken.Turner - 7/9/13 at 8:30am
Few things first
Are you transfering bunch of photos or stuff like that? Speeds can be lower if that is the case.
Also in my motherboard I had a feature called USB boost where the USB transfer speed was even faster. However it made the USB 3.0 speeed even slower for me. Almost 5 mb/s... So see if you have any feature like that for your laptop and disable it.