User`s manual

2-8
AIMB-253 Mainboard
Link IndicatorActivity Indicator
LAN (RJ-45) Jack
The standard RJ-45 jack is for connection to
single Local Area Network (LAN). You can
connect a network cable to it.
Back Panel
Serial Port Connector
The serial port is a 16550A high speed communications port that sends/ receives 16
bytes FIFOs. You can attach a serial mouse or other serial devices directly to the con-
nector.
VGA Connector
The DB15-pin female connector is provided for VGA monitors.
Mouse/Keyboard Connector
The standard PS/2
®
mouse/keyboard DIN connector is for a PS/2
®
mouse/keyboard.
USB Connectors
The OHCI (Open Host Controller Interface) Universal Serial Bus root is for attaching
USB devices such as keyboard, mouse, or other USB-compatible devices.
Audio Port Connectors
These audio connectors are used for audio devices. You can differentiate the color of
the audio jacks for different audio sound effects.
Blue audio jack - Line In is used for external CD player, tapeplayer or
other audio devices.
Green audio jack - Line Out, is a connector for speakers or headphones.
Pink audio jack - Mic In, is a connector for microphones.
LED Color LED State Condition
Left Orange
Off LAN link is not established.
On (steady state) LAN link is established.
On (brighter & pulsing) The computer is communicating with another computer on the LAN.
Right
Green
Off 10 Mbit/sec data rate is selected.
On 100 Mbit/sec data rate is selected.
Orange On 1000 Mbit/sec data rate is selected.