6.
External PS/2 Display Connector is where a display signal
cable plugs in if you use an external PS/2 display.
Note: If a PS/2 display is used, the LCD display is disabled.
7.
System Expansion Connector offers an IBM Personal
Computer AT compatible interface.
8.
Communication Interface Connector is reserved for the
output of the serial adapter (optional) or the internal data/fax
modem (optional) for external communication.
Introducing the IBM Personal System/2 Model L40 SX
27