Hardware Compatibility of the Following Modules for Migration

I would like to know which of the following modules are Fully Hardware Compatible and Replaceable with Each Other. The Modules include 1) EC200UCNAC 2) EC20CE 3) EG21GGB 4) EG25GGB.
Hoping for quick response. Thankyou

  1. EC20CE 3) EG21GGB 4) EG25GGB is fully compatible, but there are some differences between EC200U and the other three modules. When using it, please refer to the hardware documentation