Lenovo x3250 m6 - Page 37

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Figure11.Switchesandjumpersonthesystemboard
1ClearCMOSjumper2UEFIbootbackupjumper(JP24)
3TPMphysicalpresencejumper(JP39)4SW1switchblock
Thefollowingtabledescribesthejumpersonthesystemboard.
Table2.Jumpersdefinition
JumpernameDescription
ClearCMOSjumper•Pins1and2(default):KeeptheCMOSdata.
•Pins2and3:CleartheCMOSdata.
UEFIbootbackup
jumper
•Pins1and2(default):LoadtheprimaryserverfirmwareROMpage.
•Pins2and3:Bootfrombackupandloadthesecondary(backup)serverfirmware
ROMpage.
TPMphysicalpresence
jumper
•Pins1and2:Defaultoff
•Pins2and3:IndicatesaphysicalpresencetothesystemTPM
Ifnojumperispresent,theserverrespondsasifthepinsaresettothedefault.
Note:ChangingthepositionoftheUEFIbootbackupjumperfrompins1and2topins2and3beforethe
serveristurnedonalterswhichflashROMpageisloaded.Donotchangethejumperpinpositionafterthe
serveristurnedon.Thiscancauseanunpredictableproblem.
Chapter3.Componentlocations23