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Appendix I: BIOS Differences
The following table displays the differences in BIOS between
B3870 and S3870. For a complete review of S3870 BIOS,
refer to the motherboard manual.
S3870 Mainboard
B3870 Barebone
Advanced
Floppy
Configuration
Floppy A [1.44 MB 3 1/2 “]
Floppy B [Enabled]
Floppy A [Disabled]
Floppy B [Disabled]
Hardware Health
Configuration
FAN Select [4Pin FAN]
FAN Select [3Pin FAN]
Auto FAN1, 2 Power Con-
trol [Disabled]
Auto FAN Power
Control [Enabled]
PWM Minimal Duty Cycle
[50% Duty Cycle]
PWM Minimal Duty Cycle
[40% Duty Cycle]
Auto FAN3, 4 Power Con-
trol [Disabled]
--
PWM Minimal Duty Cycle
[50% Duty Cycle]
--
FAN Fail LED indicator
[Disabled]
FAN Fail LED indicator
[Enabled]
Chipset
X
NorthBridge
Configuration
X
HT1000 South Bridge
Configuration
Power Control After Power
Fail [Formal State]
Resume on RTC Alarm
[Disabled]
Resume on PME#
[Enabled]
Watchdog Timer
[Disabled]
South Bridge Chipset
Configuration
Hide XIOAPIC PCI Func-
tions [Enabled]
Power Button Instant Off
[Enabled]
