Being in Australia, Pact tend to be rather asleep unfortunately when I can ring them. Now I'm home early, I'll give them a ring.
It seems nobody wants to pick up the phone...
For simplicity, I have quoted the PACT XP as the Easton Professional Chronograph IS pretty much the XP Professional PACT, just with different software and marketed for Archers.
The MK IV XP is a USB connection.
However, this chrono uses a serial connection, like your original dial up modem used to.
The plug is a D-9 to an RJ-45 like a network cable.
Thanks guys. Your help is appreciated.