Jetson TX2 NX, Jetson Nano and Jetson Xavier NX modules share the same form-factor and pin compatibility., however their carriers have different power budget.
For power issue, please check Considerations when using Jetson Xavier NX module with Nano devkit carrier - Jetson & Embedded Systems / Jetson Xavier NX - NVIDIA Developer Forums
For the details of carrier boards, please check Jetson TX2 NX Interface Comparison and Migration from Jetson TX2, Jetson Xavier NX, and Jetson Nano