Cube orange compatibility with PX4

Hello all, I’m sorry if there’s already a similar post. I’m considering cube orange to run PX4. As per PX4’s website they supported cube black but cube orange is based on manufacturer’s support. I wanted to know what are the stable versions of PX4 running on cube orange and how reliable it is. I understand ardupilot runs really good but I’m not sure about PX4.

Also, PX4’s site also mentions “cube orange does not follow pixhawk standards due to a proprietary connector”. Could you explain what that means. Thanks!

Cube orange is compatiible with PX4 flight control firmware.