Macpro shows pronterface por /dev/tty.BLTH (no replies)

Hello all: Issue I have a Macbook pro and pronterface loaded. When opening pronterface the port box shows /dev/tty.BLTH and /dev/cu.BLTH. On either one, pronterface will not connect to my printer. I have an Ender 3, 4.2.7 board, Marlin 2.0.1
Any help is appreciated.