Quad Copter upgrade to pixhawk cube

I am using a pixhawk version 1 on a quad Copter and would like to update to a pixhawk 2.1 cube and would like to know if gps/compass I have will work on the cube as well as other connectors like the 3dr tel. Radios , tf mini lidars , power modules and such. If anyone has made a similar upgrade like this what problems did you encounter and what things had to be upgraded

Thanks for any help

The older hardware is still compatible. That’s really a function of the firmware, so it works today, you’re good. When you order the Cube & Carrier, it will come with a full set of cables and connectors. I suggest the Cube Orange and carrier set that includes ADS-B.

Ok thanks for the help