Saturday, 19 March 2016

APC UPS cable pinout
APC non-standard serial cable details.

APC 940-0625A

These are used with the newer models such as the SMT series. One end is a 9-pin female serial connector, the other a 10-pin RJ50 connector (like an Ethernet plug but with two more pins).

In the 9-pin connector pins 1 (DCD) and 4 (DTR) are connected together, as are 7 (RTS) and 8 (CTS).

DB9S    RJ50
1 \
2  |         2     Black
3  |         8     Brown
4 /
5            7     Red
6
7    \
8    /
9
S           4     Black


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