: Features integrated Intel Graphics Media Accelerator X3100 (GMA X3100) or discrete ATI chipsets depending on the specific laptop model. Connectivity & Ports :
Look for a or W83627 chip. This IC controls power button logic, fan speed, and thermal shutdown. The schematic shows its standby power and the condition for pulling PS_ON low. Hannstar J Mv-4 94v-0 E89382 Motherboard Schematic Pdf