So you have lost your MikroTik radio's adapter and you really need connection right now! It is easy. Well, as long as you have the MikroTik Router with the yellow port.
Connect the cable from the radio to the yellow port (5) and login into the router and do the following;
1. Go to Interfaces, then select ether5-slave-local.
Change on Master Port to be none.
Change the name to something else like ether5. Make sure the word slave is not there because the NAT rule won't accept a slave port.
Apply then Ok and that is done
2. Go to IP>Firewall and choose NAT.
Choose the Out. Interface to be ether5
And you are done. Enjoy the connection.