Installing An External Vga Monitor - Acer Extensa 900 Series Maintenance Manual

Any device that uses an RS-232 interface
Note: Refer to Figure 2-4 for port assignments if using the MPB option.
Caution: Never connect a parallel device to a serial port or a serial device
to a parallel port or video port; this may cause damage to the notebook
and/or external device. If you are uncertain of what type connector the
external device has, refer to the technical manual for the external device.

2.4.5 Installing an External VGA Monitor

The notebook (and optional MPB) contain an external CRT port that can drive one of
a variety of monitor resolutions and colors as summarized in Section 1. The associated
connector location and pinouts for the notebook are shown in Figure 2-9.
Note: Refer to Figure 2-4 for port assignments if using the MPB option.
Figure 2-8 Serial Port Pinouts
Installation 2-11