PortServer II password recovery

I recently bought a number of used PortServer II’s on eBay. I just powered one up and connected to port 1 using hyperterminal from my PC, and I get a login and password prompt. I need to get them all reset to their factory defaults. How do I do this?

Geez, I’m lame. Should have searched through the forum before posting. I found the answer from a post in Feb. Just hold down the arrow keys when booting it.