IBM PS/2 65 SX Hardware Maintenance Reference page 34

5.2 Wrap Plug
|The Tri-Connector wrap plug (IBM part 72X8546) is used during the advanced
|diagnostic tests of the serial and parallel ports.
|The Tri-Connector wrap plug replaces the following:
| (IBM part 8529228) Printer Adapter wrap plug
| (IBM part 8286126) Serial Port wrap plug
| (IBM part 8529280) Communications Adapter wrap plug
| (IBM part 62X1083) Communications wrap plug 25-pin
| (IBM part 62X1084) Communications wrap plug
IBM PS/2 Model 65 SX HMR
Wrap Plug
9-pin.
PICTURE 3
5.2 - 1