Lenovo System x3500 M5 Type 5464 - System-Board Switches and Jumpers

System-boardswitchesandjumpers
Thefollowingillustrationshowsthelocationanddescriptionoftheswitchesandjumpers.
1
2
3
4
UEFI Boot Recovery
Password Override
Clear CMOS
System TPM Physical Presence
Switch block
off on
Figure11.Locationanddescriptionofswitchesandjumpers
Note:Ifthereisaclearprotectivestickeronthetopoftheswitchblocks,youmustremoveanddiscardit
toaccesstheswitches.
ThefollowingtabledescribesthefunctionsoftheSW4switchblockonthesystemboard.
Table5.SystemboardSW2switchblockdefinition
SwitchnumberSwitchnameDefaultpositionDescription
1UEFIbootrecovery
Off
Whenthisswitchisoff,theprimaryfirmware
ROMpageisloaded.Whenthisswitchison,the
secondary(backup)firmwareROMpageisloaded.
Note:ChangingthepositionoftheUEFIbootback
switchbeforetheserveristurnedonalterswhich
flashROMpageisloaded.Donotmovetheswitch
aftertheserveristurnedon.Thiscancausean
unpredictableproblem.
2Power-onpassword
override
Off
Bypassesthepower-onpasswordcheckthenext
timetheserveristurnedonandstartstheSetup
utilitysothatyoucanchangeordeletethepower-on
passwordwhenon.
Notes:
1.Youdonothavetomovetheswitchbacktothe
defaultpositionafterthepower-onpassword
inoverridden.
Chapter2.Installingoptionaldevices27