FIC M296 - Manual (Page 74)

Software Functional Overview
AUDIO Hardware Controlled by SIS961
Audio AMP Hardware Controlled by BIOS
LCD Backlight Hardware Power off
Serial Port Software Controlled by PMU08 GPIO[B3] pin
IR Module Hardware Controlled by SUSB# pin
LAN Hardware Controlled by Driver enter Dx status
Internal Modem Hardware Controlled by Driver enter Dx ststus
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FIC M295 / M296 Service Manual