Honeywell Thor vm3 User Manual page 174

Verify the cable is attached to the Thor VM3. Disconnect and reconnect the cable from the PC.
Check that the correct connection is selected.
See Reset and Loss of Host Re-connection, above.
ActiveSync indicator on the host (disc in the toolbar tray) turns green and spins as soon as you connect the cable,
before tapping the Connect icon (or REPLLOG.EXE in the Windows directory).
One or more control lines are tied together incorrectly. This is usually a cable problem.
ActiveSync indicator on the host turns green and spins, but connection never occurs
Check that the correct connection is selected.
-or-
Incorrect or broken data lines in cable.
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