Lenovo System x3250 M4 - System-Board Switches and Jumpers

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DIMM 1
DIMM 2
DIMM 3
DIMM 4
Microprocessor
Video
Serial (COM1)
NMI button
Ethernet connector 2/
USB connectors 3&4
Ethernet connector 1/
USB connectors 1&2
Figure4.Externalconnectorsonthesystemboard
System-boardswitchesandjumpers
Thefollowingillustrationshowsthelocationanddescriptionoftheswitches,jumpers,andbuttons.
Important:
1.Beforeyouchangeanyswitchsettingsormoveanyjumpers,turnofftheserver;then,disconnectall
powercordsandexternalcables.Reviewtheinformationin“Safety”onpagev
,“Installationguidelines”
onpage33,and“Turningofftheserver”onpage15.
2.Anysystem-boardswitchorjumperblockthatisnotshownintheillustrationsinthisdocumentare
reserved.
3.Ifthereisaclearprotectivestickeronthetopoftheswitchblocks,youmustremoveanddiscarditto
accesstheswitches.
22LenovoSystemx3250M4InstallationandServiceGuide