Dell OptiPlex GX1p - Manual (Page 27)

The serial ports use 9-pin D-subminiature connectors on the back panel. These ports support devices such as external modems or plotters that
require serial transmission (sending one bit of data at a time over one line).
The default designations for these integrated serial ports are COM1 for serial port 1 and COM2 for serial port 2. Port designations are used in
software installation procedures to identify the port used by a device
—for example, specifying the port used by a modem when installing
communications software.
The system contains a reconfiguration feature to reassign the serial port's designation if you add an expansion card containing a serial port using
this designation.
If you set the system ’s integrated serial ports to Auto in the System Setup program and add an expansion card containing a serial port configured
to a specific designation, the computer automatically maps (assigns) the integrated ports to the appropriate COM setting as necessary.
Before you add a card with a serial port, check the documentation that accompanied your software to make sure that the software can be mapped
to the new COM port designation.
Keyboard Connector
Your system uses a PS/2-style keyboard. The keyboard cable attaches to a 6-pin miniature DIN connector on the back panel of your computer.
Network Cable Requirements
Your computer's NIC connector (an RJ45 connector located on the back panel) is designed for attaching an unshielded twisted pair (UTP) Ethernet
cable. Press one end of the UTP cable into the NIC connector until the cable snaps securely into place.
Connect the other end of the cable to an RJ45 jack wall plate or to an RJ45 port on a UTP concentrator or hub, depending on your network
configuration.
Using the Power Switch
The power button controls the system's AC input power.
The Microsoft Windows 98 and Windows 98 Second Edition (SE) operating systems let you configure the function of the power button through the
Advanced Configuration and Power Interface (ACPI) feature (see Table 2).
NOTICE: When you turn off your computer system, perform an orderly system shutdown using the operating system menu when
possible.
Table 2. Power Button Behavior Under Microsoft Windows 98 and Windows 98 SE Operating Systems With ACPI
* Pressing or holding the power button to shut down the system may result in data loss. Use the power button to shut down the system only if the
operating system is not responding.
Microsoft Windows 95 does not support ACPI. Table 3 shows power button functions for Windows 95 operating systems and for Windows 98
operating systems that have the ACPI feature disabled.
Table 3. Power Button Behavior Under Microsoft Windows 95 and Windows 98 (With Dell AutoShutdown Loaded)
* Pressing or holding the power button to shut down the system may result in data loss. Use the power button to shut down the system only if the
operating system is not responding.
Table 4 shows power button functions for Microsoft Windows NT operating systems.
Table 4. Power Button Behavior Under Microsoft Windows NT (With Dell AutoShutdown Loaded)
Action
Results
System Turned On
and ACPI Enabled System in Standby Mode System Turned Off
Press power button System goes into standby mode
or turns off (depending on the
operating system setup) System turns on Boots and system turns on
Hold power button
for 6 seconds* System turns off immediately System turns off immediately Boots and system turns on
Action
Results
System Turned On System in Suspend Mode System Turned Off
Press power button System turns off System turns off Boots and system turns on
Hold power button for 6 seconds* System turns off immediately System turns off immediately Boots and system turns on