Lenovo System x3650 M5 - Page 48

Switch block 6 (SW6)
CMOS clear jumper
System TPM physical
presence jumper
UEFI boot backup jumper
Figure36.System-boardswitches,jumpers,andbuttons:formachinetype8871–AC3
Thefollowingtabledescribesthejumpersonthesystemboard.
Table2.Systemboardjumpers
JumpernumberJumpernameJumpersetting
J7
SystemTPMphysicalpresence
jumper
•Pins1and2:Normal(default).
•Pins2and3:Indicatesaphysicalpresenceto
thesystemTPM.
J11
CMOSclearjumper•Pins1and2:Normal(default).
•Pins2and3:Clearsthereal-timeclock(RTC)
registry.
J15UEFIbootbackupjumper
•Pins1and2:Normal(default).Loadsthe
primaryserverfirmwareROMpage.
•Pins2and3:Loadsthesecondary(backup)
serverfirmwareROMpage.
Notes:
1.Ifnojumperispresent,theserverrespondsasifthepinsaresettothedefault.
2.ChangingthepositionoftheUEFIbootbackupjumper(J15)frompins1and2topins2and3beforetheserver
isturnedonalterswhichflashROMpageisloaded.Donotchangethejumperpinpositionaftertheserveris
turnedon.Thiscancauseanunpredictableproblem.
36LenovoSystemx3650M5InstallationandServiceGuide