Acer Aspire M3420 Acer Aspire M3420 Desktop Service Guide - Page 111
Internal Header Pin Definition, CPU Fan Header, SENSE, PWM CONTROL, System Fan Header
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Internal Header Pin Definition Header Name Function CPU Fan Header Definition 1:GND 2:+12V 3:SENSE 4:PWM CONTROL System Fan Header 1:GND 2:+12V 3:SENSE 4:PWM CONTROL Front Panel Audio Header 1:MIC_L 2:GND 3:MIC_R 4:PWR 5:FRONT_R 6:MIC_JD 7:FRONT_SENCE 8:NC 9:FRONT_L 10:FRONT_JD Chapter 5 103