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SW1: 1~3: CPU Clock Setting
SW1: 4~6: Bus Ratio Select
Set the SW1 jumper according to your CPU Bus Ratio and
CPU Clock.
SW1: 1~3
55MHz
ON
CPU Clock
Setting
1
2
3
1.5x or
SW1: 4~6
3.5x
ON
CPU Bus
Ratio Setting
4
5
6
4.0x
SW1: 4~6
ON
CPU Bus
Ratio Setting
4
5
6
IDE LED Activity Light: (J1 pin1–4)
This connector connects to the hard disk activity indicator
light on the case.
Infrared Port Module Connector (J1 pin6–10)
The system board provides a 5-pin infrared connectorÑIR1
as an optional module for wireless transmitting and
receiving. Pin 6 through 10 are Transmit, GND, Receive
(low speed), Receive (high speed), and Vcc, respectively.
J1 pin12, 13: ATX Power Button
Toggle this switch to turn on/off the system.
J1 pin14, 15: Reserved
60MHz
66MHz
75MHz
ON
ON
ON
1
2
3
1
2
3
1
2
3
2.0x
2.5x
3.0x
ON
ON
ON
4
5
6
4
5
6
4
5
6
4.5x
5.0x
5.5x
ON
ON
ON
4
5
6
4
5
6
4
5
6
Hardware Installation 13
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