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9 pin D-SUB female connector layout
9 pin D-SUB female connector
APC part# 940-0128D

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

     CTS(8)<---+--- E   2N2222(NPN)
                ____ /| B |
               |    C     |
               |          |
     RTS(7)>---|    2k      1N5819
               |          |
               +--- C     |
                     /| B
     DCD(1)<------- E    2N2222(NPN)
     GND(5)----------------------------(7)Signal GND
     (Shield)--------------------------(4)Chassis GND
10 pin RJ50 (10P10C) male connector layout
10 pin RJ50 (10P10C) male connector
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