Manual describes following connections:
The serial CAT connection appears to be standard so the store cable should work for it.
Audio/PTT comes from DIN5. No store cable at the time of writing, but considering it. Please keep an eye out for announcements in the email list (subscribe at homepage). The pinout looks like this:
DIN5 pin 1 (Audio In) → 3.5mm TRRS ring 1 (RIG_AFIN)
DIN5 pin 2 (Gnd) → 3.5mm TRRS sleeve (GND)
DIN5 pin 3 (PTT) → 3.5mm ring2 (RIG_PTT)
DIN5 pin 4 (Audio Out) → 3.5mm TRRS tip (RIG_AFOUT)
A less attractive alternative to the accessory connection for the audio/PTT, it is possible to use mic/phones jack for that in front with the available store cable:
