I have one in the command trailer with a agency I vollie with- it simply refuses flat out to even recognize a aftermarket rib (exact moto copy) , real Moto rib, SmartRib, and as of this current date- 5 different laptops with proper specs, 1 laptop with DOS only and from the mid 90's, and 3 different desktop PC's.
Than, we took it into a moto shop... and wouldn't you know it, same issue. I've been told some are really selective on which RSS/CPS it uses- what type of RIB, and which computer is running said RSS.
Personal experience.