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** We recommend that you use an ATX 12V Specification 2.0-compliant power supply
unit (PSU) with a minimum of 350W power rating. This type has 24-pin and 4-pin
power plugs.
** If you intend to use a PSU with 20-pin and 4-pin power plugs, make sure that the 20-pin
power plug can provide at least 15A on +12V and the power supply unit has a minimum
power rating of 350W. The system may become unstable or may not boot up if the
power is inadequate.
(2)
ATX 12V Power Connector (4-pin block) : ATX12V
This is a new defined 4-pins connector that usually comes with ATX Power Supply. The
ATX Power Supply which fully support Pentium 4 processor must including this
connector for support extra 12V voltage to maintain system power consumption.
Without this connector might cause system unstable because the power supply can not
provide sufficient current for system.
(3) PS/2 Mouse & PS/2 Keyboard Connector: PS2KBMS1
The connectors for PS/2 keyboard and PS/2 Mouse.
(4) USB Port connector: USB/USB1
The connectors are 4-pin connector that connect USB devices to the system board.
(5) LAN Port connector: USBLAN
This connector is standard RJ45 connector for Network
Support 10M/100Mb/s data transfer rate for 754EXP-P
Support 10M/100M/1G b/s data transfer rate for 754EXP-G
Pin 1
ROW1 ROW2
24-Pin
ROW1 ROW2
Pin 1
20-Pin
PIN
ROW1 ROW2
1 3.3V
3.3V
2 3.3V
-12V
3 GND
GND
4 5V
Soft Power On
5 GND
GND
6 5V
GND
7 GND
GND
8 Power OK
-5V
9 +5V (for Soft Logic)
+5V
10 +12V
+5V
11 +12V
+5V
12 +3V
GND
Pin 1
