User`s manual

Pin Signal

1 SMBUS Clock

2 SMBUS Data

3 Ground

4 +5V

SMBUS Header

(17) SMBUS Header (CN5)

(18) Auxiliary Power Connector (CN16)

Warning: The MX266 is capable of use two type of power input, a standard ATX

power supply or a single source 5V power supply, incase of using single 5V power source, all

connector that provide 12V or 3.3V will no longer available (Example of 12V on PCI slot,

LCD inverter and LCD panel connector etc.).

Note: Set CN16 to 2-3 closed. If 5V Single Voltage power supply is to be used

(19) AT/ATX Power Select (JP2)

You can use JP2 to select the power supply type. To use the single voltage 5V power set JP2 to 1-

2 closed. Set JP2 to 2-3 closed (and CN16 to 2-3 closed), if ATX power supply is to be used.

5V/ATX Power Select (JP2)

Note: Set CN16 to 2-3 closed. If 5V Single Voltage power supply is to be used.

2-7 Starting Up Your Computer

Signal PIN

VCCSB 3

VCC 2

PSON# 1