When moving an RFID reader from an old green PCB to the new blue Keybox 7 card there might be questions on where the cables should be connected on the blue card as this is a new connector.
Green to Tx (3rd port on the terminal)
White to Rx (4th port on the terminal)
Black to GND (5th port on the terminal)
Red to 12V (1st port on the terminal)