Here is how I used to connect CGEM:
CGEM ---> HC port ---> HC --- >
6P 4P RJ-22/ DB9 cable ---> Serial to USB cable ----> PC/Laptop.
In PC/Laptop, install a copy of NexRemote and Celestron mount ASCOM driver.
Connect NexRemote to the physical COM port and set the "virtual COM" port like COM8 or COM9.
Select "Celestron Telescope Driver" from the Telescope tab in Equipment Profile Manager and set it to the virtual COM port number in the NexRemote above.
I would think AVX's setting should not be too much different than CGEM.
Edited by elinchrom, 14 February 2018 - 09:52 AM.