"Larry" wrote in message
...
Meindert,

No flame intended, really! What are the typical problems with USB hubs?
Thanks!

I suspect you mean serial/usb converters?

Many of them don't have an internal serial number so the created com port
changes when you plug it into a different USB port. All of them support the
M$ Plug & Play support for serial ports which means Windows thinks your GPS
is a mouse. Many of them don't work as supplied, wrong drivers and that sort
of stuff.

If you really meant USB hubs, then I don't know of any problems with them
apart from being able to be powered from 12V or 24V.

Meindert