Service Guide for Aspire M1640 / M3640 / M5640
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... connectors 1 serial port 2*5 pin connector (reserve header on all SKU) 1 AUX-In 4pin connector 1 1*4 S/PDIF out header (reserve header on all SKU) 1 2*5 pin Intel FPIO spec. 1 PCI Express x 1 slot 2 PCI slots 1 FDD slot 1 PATA connector 4 SATA connectors 3 2*5 pin Intel FPIO specification USB pin connectors (follow Intel FPIO standard Specification) 1 2*5 pin IEEE1394... CMOS 1 on board buzzer Color management 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
... connectors 1 serial port 2*5 pin connector (reserve header on all SKU) 1 AUX-In 4pin connector 1 1*4 S/PDIF out header (reserve header on all SKU) 1 2*5 pin Intel FPIO spec. 1 PCI Express x 1 slot 2 PCI slots 1 FDD slot 1 PATA connector 4 SATA connectors 3 2*5 pin Intel FPIO specification USB pin connectors (follow Intel FPIO standard Specification) 1 2*5 pin IEEE1394... CMOS 1 on board buzzer Color management 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