This is a genuine FrSky XJT transmitter module for the Horus X12.
This Transmitter module does not require soldering to replace. The module unplugs from a daughter board located inside the back of the Horus X12. Be mindful unplugging the antenna connectors as they are glued in place. A little careful prodding with a pair of tweezers and you will be able to remove the glue from the antenna plugs and then carefully unplug them from their respective IPX connectors.