swordfish RTH and TBS Crossfire receiver

I just received my swordfish RTH version and wondering IF there is a TBS Crossfire receiver built into this flight controller or do i have to add one.

--the RTH version didnt have receiver, if you want use CRSF receiver, just plugged the receiver to the UART 1 or 2,, tx to rx, rx to TX, and go to UART tab, select protocol to CRSF