Service Guide for Aspire M1640 / M3640 / M5640
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... PS2, PS3 style power supply Features for internal mounting tab Location of 4 external mounting holes Power Supply Electrical Design Feature 300W/250W in stable mode (Acer Assign System Power Unit) 5 Microphone In/ Headphone Out pin connectors 1 serial port 2*5 pin connector (reserve header on all SKU) 1 AUX-In 4pin connector 1 1*4 S/PDIF out... PS3/PS2 SPS connector 1 2*7 pin front panel IO header 1 Jumper for clear CMOS 1 on board buzzer Color management for on all SKU) 1 2*5 pin Intel FPIO spec.
... PS2, PS3 style power supply Features for internal mounting tab Location of 4 external mounting holes Power Supply Electrical Design Feature 300W/250W in stable mode (Acer Assign System Power Unit) 5 Microphone In/ Headphone Out pin connectors 1 serial port 2*5 pin connector (reserve header on all SKU) 1 AUX-In 4pin connector 1 1*4 S/PDIF out... PS3/PS2 SPS connector 1 2*7 pin front panel IO header 1 Jumper for clear CMOS 1 on board buzzer Color management for on all SKU) 1 2*5 pin Intel FPIO spec.