PT 9000/9000m PT 9150CD-7220 Power & Setup• JP8 – Powers COM 1(A)• JP10 – Powers COM 4(D)• JP9 – Powers COM 3(C)• JP3 – CMOSPin assignments: 1 & 2 12 Volts3 & 4 Off (Default)5 & 6 5 VoltsThis is used for powering up stand alone Customer Displays that do not have theexternal power supply adapter.Please note that a printer should not be hooked up with a COM Port that is powered up