Lenovo System x3550 M5 - Server Controls, Leds, and Power; Front View

•SerialPresenceDetection(SPD)onmemory,VPDonsystemboard,powersupply,andharddiskdriveor
solid-statedrivebackplanes,microprocessorandmemoryexpansiontray,andEthernetcards
•Single-DIMMisolationofexcessivecorrectableerrorormulti-biterrorbytheUnifiedExtensibleFirmware
Interface(UEFI)
•Solid-statedrives
•Standbyvoltageforsystem-managementfeaturesandmonitoring
•Startup(boot)fromLANthroughremoteinitialprogramload(RIPL)ordynamichostconfiguration
protocol/bootprotocol(DHCP/BOOTP)
•Systemauto-configuringfromtheconfigurationmenu
•System-errorlogging(POSTandIMM)
•Systems-managementmonitoringthroughtheInter-IntegratedCircuit(IC)protocolbus
•Uncorrectableerror(UE)detection
•UpgradeablePOST,UnifiedExtensibleFirmwareInterface(UEFI),diagnostics,IMMfirmware,and
read-onlymemory(ROM)residentcode,locallyorovertheLAN
•Vitalproductdata(VPD)onmicroprocessors,systemboard,powersupplies,andSAS/SATA(hot-swap
harddiskdriveorsolid-statedrive)backplane
•WakeonLANcapability
Servercontrols,LEDs,andpower
Thissectiondescribesthecontrolsandlight-emittingdiodes(LEDs)andhowtoturntheserveronandoff.
ForthelocationsofotherLEDsonthesystemboard,see“System-boardLEDs”onpage29.
Frontview
Thefollowingillustrationsshowthecontrols,LEDs,andconnectorsonthefrontofyourservermodel.As
theyarethesameforeitherhot-swaporsimple-swapmodels,onlythehot-swapmodelisusedtoshow
therelevantlocations.
Hard disk drive
activity LED (green)
Hard disk drive
status LED (yellow)
Operator
information
panel
2.5-inch hard disk
drive bays
Rack
release
latch
Rack
release
latch
USB 2.0
connector
Figure11.Frontview:eight2.5-inchhot-swap-driveservermodelwiththesimplemediacage
16LenovoSystemx3550M5InstallationandServiceGuide