User Guide

13. PC99 Color Coded Back Panel
11. STBY LED
STBY LED is AOpen’s considerate design that we aim at providing you friendly system
information. The STBY LED will light up when power is provided to the motherboard. This is
a convenient indication for you to check the system power status in many circumstances
such as power on/off, stand-by mode and RAM power status during Suspend to RAM
mode.
The onboard I/O devices are PS/2 Keyboard, PS/2 Mouse, COM1, VGA port, Printer, USB, and
LAN ports. The view angle of drawing shown here is from the back panel of the housing.
14. Enlarged Aluminum Heatsink
12. Support 10/100Mbps LAN Onboard
The Intel 82551QM includes a fast Ethernet controller on chip. On the strength of this LAN
controller on board, which is a highly-integrated Platform LAN Connect device, it provides
10/100M bps Ethernet for office and home use, the Ethernet RJ45 connector is located on
top of USB connectors. The green LED indicates the link mode, it lights when linking to
network and blinking when transferring data. The orange LED indicates the transfer mode,
and it lights when data is transferring in 100Mbps mode. To enable or disable this function,
you may simply adjust it through BIOS.
Cool down CPU and Chipset is important for system reliability. Enlarged aluminum heat sink
provides better heat consumption especially when you are trying to over clocking the CPU.
System
Power LED
Warning: Do not install or
remove the DIMM module
or others devices when the
STBY LED lights on.
Green/ACT
Orange/Speed
100/10Mb Ethernet Port
PS/2 Mouse
Connector
PS/2 Keyboard
Connector
USB
Connectors
SPP/EPP/ECP
Parallel Port
VGA Port
COM 2 Port
LAN Port
LAN Port
PS/2 Keyboard: For standard keyboard, which is using a PS/2 plug.
PS/2 Mouse: For PC-Mouse, which is using a PS/2 plug.
USB Port: Available for connecting USB devices.
Parallel Port: To connect with SPP/ECP/EPP printer.
COM1/COM2 Port: To connect with pointing devices, modem or others serial devices.
VGA Connector: To connect with PC monitor.