I just purchased a USB to Mini-USB console cable to use with the 2960s switches we just bought. I download the current(?) driver Ver. 3.1 loaded it on my Win 7 64-bit laptop. It installs ok but when I try to use it with Putty, Putty comes back saying it can't access the port. I noticed the driver says it's for Win XP and Win Vista. Is there a newer driver for Win 7? Any other ideas?