Acer Aspire M3920 Service Manual page 20

Miscellaneous
Parameter
AHCI Port0/1/2/3/4/5
Processor Multiplier
Bootup Num-lock
USB Beep Message
12
Description
Displays the status of auto detection of the AHCI device.
This field is only visible if an engineering processor installed. It is only
accessible when the EIST function is disabled.
Selects power on state for Num Lock.
Enables or disables BIOS to display error beeps or messages during USB
device enumeration.
Option
On
Off
Enabled
Disabled
Chapter 2