I don't know if this is applicable to your particular Cannon printer, but in the past, I have experienced problems using printer share devices and the old parallel ZIP drives with several types of Cannon printers. If I remember correctly, they were all bjc series printers. On some of the units, Canon offered a driver that over came the problem but the drivers were always quirky and lacked allot of the features and software that the original drivers offered. Others, I was told by Canon were just unable to function thru any type of device that interfered with the way the printer communicated with the computer. To answer your question, I would guess that out of the three choices offered, that EPP would be the correct setting. It has been a while, but I think that it should have the setting EPP+ECP and that would be the most desired for most newer parallel port printers. Dennis Noble 361-808-9363 I am trying to help someone with setting up an auto-switch parallel port printer switch. He is not familiar with configuration of parallel ports, but I managed to get him into the CMOS setup and find the EPP/CPP/normal mode setup. It has been a long time since I used one. Can someone tell me which parallel port mode should be use with such automatic switches? It is a Cannon C5000 printer that is the target. So far, he has not been able to print trough the auto-switch. He tried two different brand switches and neither works for him. The OS is Windows 98. Thanks for any input. Peter Visit our website regularly for FAQs, articles, how-to's, tech tips and much more http://freepctech.com