Biostar A68N-2100E Bios User Manual page 23

USB Support
If Disabled, all USB devices will NOT be available until after OS boot. If Partial Initial, USB Mass
Storage and specific USB port/device will NOT be available before OS boot. If Enabled, all USB
devices will be available in OS and Post.
Options: Full Initial (Default) / Disabled / Partial Initial
PS2 Devices Support
If Disabled, PS2 devices will be skipped.
Options: Enabled (Default) / Disabled
Network Stack Driver Support
If Disabled, Network Stack Drivers will be skipped.
Options: Disabled (Default) / Enabled
Boot Flash protection
While enabled, it can't flash write and flash erase by SMI.
Options: Disabled (Default) / Enabled
Boot Success Beep
This item BIOS boot post beep message.
Options: Enabled (Default) / Disabled
CSM16 Parameters
GateA20 Active
UPON REQUEST - GA20 can be disabled using BIOS services. ALWAYS - do not allow disabling
GA20; this option in useful when any RT code is executed above 1MB.
Options: Upon Request (Default) / Always
Option ROM Messages
This item allows you to set display mode for Option ROM.
Options: Disabled (Default) / Enabled
A68N-2100E / A68N-2100K / A68N-2100X / A68N-5600E
4. Boot Menu | 23