This POS option in Options Configuration indicates which type of printer(s) is connected directly (also called "slaved") to this terminal.
B = Both the old 40-column receipt printer and an 80-column invoice printer are connected directly (slaved) to this terminal.
C = Both the new 40-colum receipt printer and an 80-column invoice printer are connected directly (slaved) to this terminal.
R = A report printer is connected directly (slaved) to this terminal.
4 = Old 40-column receipt printer (on/off switch is on the front) is the only printer connected directly (slaved) to this terminal.
5 = New 40-column receipt printer (on/off switch is on the side) is the only printer connected directly (slaved) to this terminal.
8 = 80-column invoice printer is the only printer connected directly (slaved) to this terminal.
Blank = No printer is connected directly (slaved) to this terminal.