Paul Remde wrote:
I've heard different reports on this. Dell technical support told me that
the X3 doesn't have a serial port (Dell technical support has been wrong on
these type of questions in the past). But Pharos GPS told me that it does
have a serial port and that they offer a GPS system that works with the X3
through the serial port.

The serial port does not have an RS232 level converter, so the serial
port pins have inverted CMOS (~3 volt) logic signals. Some mouse-style
GPS receivers (like the Holux GM-210 I have sitting here) have both
RS232 and CMOS level serial inputs/outputs, so they can be directly
hooked up to the X3 without external level converters.

Marc