Lenovo ThinkServer RD330 - System Board Jumpers and Switches

19Redundantpowersupplyconnector1
20Redundantpowersupplyconnector2
Usedtoconnectahot-swapredundantpowersupply.
21Backplanepowerconnector1
Usedtoconnectthepowercablefromthebackplane.
22Backplanepowerconnector2
Reservedforthemanufacturer.
232527283032Systemfanconnectors
Usedtoconnectthecableofthecorrespondingsystemfan.
2631Memoryslots
Thereare12memoryslotsonthesystemboard.Formoreinformation,see“Memorymoduleinstallation
rules”onpage75.
24Microprocessorsocket2
29Microprocessorsocket1
Iftheserverhastwomicroprocessors,eachofthemicroprocessorissecuredinthemicroprocessorsocket
onthesystemboardandaheatsinkisinstalledabovethemicroprocessortoprovidecooling.Iftheserver
hasonlyonemicroprocessor,themicroprocessorsocket2isprotectedbyamicroprocessorsocketcover.
Systemboardjumpersandswitches
Thistopicprovidesinformationaboutthejumpersandswitchesonthesystemboard.
Ajumperisashortlengthofconductorusedtosetuporadjustprintedcircuitboards,suchasthesystem
boardofacomputer.Ajumperusuallyisencasedinanon-conductiveblockofplasticforconvenientuse
andtoavoidanypossibledamagetoalivecircuit.Jumperpinsarrangedingroupsonthesystemboardare
calledjumperblocks.Whentwoormorejumperpinsarecappedwithajumper,anelectricalconnectionis
madebetweenthemandtheequipmentisthusinstructedtoactivatecertainsettingsaccordingly.
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