Advantech AIMB-540, User Manual

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35 Chapter 3
3.6.2 Jumper JUSBV1: USB Standby Voltage
This jumper controls the voltage to the USB ports. The default setting is
for standard 5V operation. The alternate setting configures the USB ports
to also operate with a standby voltage of 5V. This allows the system to
wake up from an S3 Suspend state. If you anitcipate using this Suspend
mode, you should set this jumper to the alternate setting.
3.7 Firmware Configuration: The CMOS Setup Utility
The BIOS CMOS Setup Utility a configuration record of system settings.
This record is based on the “Optimized Defaults” that are stored with the
utility in Flash memory and can be reloaded at any time. Many of these
settings are either recommended or required for the motherboard to oper-
ate properly. Other settings are customizable and can be changed to suit
your specific system configuration and operation requirements. A number
of the variable settings, such as CPU and IDE device settings are set to be
automatically detected in the default configuration. While these settings
can also be established manually, automatic detection is more convenient,
safe and reliable. We strongly recommend that you leave all auto-detec-
tion settings undisturbed unless you have a specific reason not to and you
are certain of what you are doing. Incorrect configuration of the CMOS
Setup Utility can result in unreliable operation or a failure of the mother-
board to work at all.
3.7.1 Using the CMOS Setup Utility
Please refer to the “Configuring the CMOS Setup Utility” section in
Chapter 5 for information on using the utility and some settings you
might want to customize. The utility does not run under an Operating
System. You must load it during the Power On Self Test (POST) while the
computer is starting up by press the Delete key or the Del key on the sys-
tem keyboard’s numeric keypad.
Table 3.3: USB Standby Voltage
Setting Function
Short1-2 USB Voltage 5-Volt[Default]
Short2-3 USB Standby Voltage 5-Volt