well as fast as a lan connection on a 56k modem, but truthfully, I had no issues with speed unless, streaming something, or extensive downloading...it met my amster needs quite nicely, and running stfax on it saved my but many times over with reports or forms i had to get people.When i say i used it to its full potential, short of progragramming...i mean just that...the other day, my 1200 was again acting up so i connected it to the sx32 through sernet serial port connector which attaches to the aux port, and was able to cross necessary files for the 1200, over into a sort of network drive! I truly with the machine could have lived and become... well you know!! :idea: