Best power CheckUPS II basic serial cable wiring

These diagrams are reverse engineered from the CheckUPS source.
Various examples use 10 k Ohm pull up resistors, but this doesn't work with all serial ports, so I use 4700 Ohm instead.

INT0027

This cable is probably obsoleted.
Wiring shutdown to DTR isn't a good idea anyway.

DTR -----------> Shutdown
             1

TXD -----------+
               |
RTS ----+      |
        |      |
       +++    +++
       | |    | |
       +++    +++
        |      |
DCD ----*      |
        |      |
RXD -----------*
        | 5    | 3
        o  /   o  /
         /      /
        *      *
        |      |
GND ----*------+
       4

1 = Shutdown
3 = Low Mains
4 = GND
5 = Low Batt

INT0051

RTS -----------> Shutdown
             1

DTR ----*------+
        |      |
       +++    +++
       | |    | |
       +++    +++
        |      |
DCD ----*      |
        |      |
CTS -----------*
        | 5    | 3
        o  /   o  /
         /      /
        *      *
        |      |
GND ----*------+
       4

Below a cable with a DB-25 at the PC side;

PC             UPS

 4 ----------- 1

 5 ----*------ 3
       |
      +++
      | | 4k7
      +++
       |
20 ----*
       |
      +++
      | | 4k7
      +++
       |
 8 ----*------ 5

 7 ----------- 4

And one with a DE-9

PC             UPS

 7 ----------- 1

 8 ----*------ 3
       |
      +++
      | | 4k7
      +++
       |
 4 ----*
       |
      +++
      | | 4k7
      +++
       |
 1 ----*------ 5

 5 ----------- 4

The resistors are mounted inside the connector shell at the PC side.
The shield is connected to the connector shell at both sides of the cable.

The usual disclaimers apply.