APC BackUPS XS1000, BX-1000 and some others cable wiring

940-0128D is functionally similar to the 940-0128A cable except for NC on (6) DTR and (2) RD on the computer side.

      RI(9)<---+
               |
     CTS(8)<---+--- E   2N2222(NPN)
                     \|___
                ____ /| B |
               |    C     |
               |          |
               +---vvvv---+--[>|------<(2)OnBatt
     RTS(7)>---|    2k      1N5819
               +---vvvv---+--[>|------<(3)LowBatt
               |          |
               +--- C     |
                     \|___|
                     /| B
     DCD(1)<------- E    2N2222(NPN)
     
     DTR(4)>-------------------------->(8)KillPwr
     
     GND(5)----------------------------(7)Signal GND
     (Shield)--------------------------(4)Chassis GND