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Connectors, switches, and LEDs 104
System configuration switch
PCHSW1 is an eight-position switch on the system board used to implement the various protections
and override functions. All eight switches will have the off position as the default setting.
Position Function Default Description
1 Configuration reset Off Off: Normal
On: System configuration settings and registry are reset to
default values.
2 BIOS recovery Off Off: Normal BIOS boot block
On: Recovery BIOS boot block
3 RAID key (reserved) Off Off: Disable RAID key
On: Enable RAID key
4 Reserved Off —
5–7 Reserved for chassis ID 0, 1,
and 2
Off —
8 Password clear Off Off: Normal
On: Clears the BIOS admin password.