serial works, sorta

Dietmar and I performed further tests with the serial cable. It worked great on the tower computer. It worked on the laptop. But only if the Dell Latitude d531 laptop was stand-alone.

If the laptop was in the pr01x (advanced?) port replicator, it didn't work.

The serial port worked, to a degree, in the APR: we tested it with an old US Robotics modem. (Remember those?)

We tried to run the Dell diagnostics on the APR, as recommended in the Dell documentation. Except that Dell documentation and the diagnostics themselves do not indicate how to do this!

Maybe we can find another APR to test with...

Maybe it's under warranty and can be exchanged.