The 845D-AV MAINBOARD
Ver 3.x
Page 19
3"#, 2 !
4 !
Hardware Installation
2.7.1. Speaker Connector
Connect your chassis speaker to this
four pin connector. It allows you to
hear systems beeps and warnings
sound.
2.7.2. Front Panel Power LED
The chassis Power LED connector can
be connected to the four pin
connector. When you turn your
system on, this LED will also be
turned on.
Top View of the Speaker
and Power LED Connector
SPEAKER
+5V DC
+5V DC
Speaker
Signal
NC
Speaker
Signal
Ground
Speaker
Signal
NC
POWER LED
PIN 1
PIN 1
2.8.1. PS/2 Keyboard connector.
This connector only supports a PS/2 keyboard plug. If you have a standard AT
size (large DIN) keyboard plug, you need to use a mini DIN adapter.
Connector: CN 1
Type: 6 pin female
2.8.2. PS/2 Mouse Connector.
This connector only supports a PS/2 mouse plug. If a PS/2 mouse is de-
tected then IRQ 12 will be directed to CN 2.
Connector: CN 2
Type: 6 pin female
2.8.3. Serial Port 1 (COM 1) and Serial Port 2 (COM 2)
Connector: CN 3 (COM 1)
Type: 9 pin male
One serial port is available for a mouse and
other serial devices. (I/O addresses used
are 3F8H/2F8H/3E8H/2E8H and IRQ3/IRQ4,
selected by CMOS setup.)
COM 1
COM 2
