Asus TUF Z390-PLUS GAMING - Onboard Switches

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Chapter 1: Product Introduction
Chapter 1
1.1.7 Onboard switches
Onboardswitchesallowyoutone-tuneperformancewhenworkingonabareoropen-
casesystem.Thisisidealforoverclockersandgamerswhocontinuallychangesettingsto
enhancesystemperformance.
1. MemOK!_II switch (MemOK!_II)
InstallingDIMMsthatarenotcompatiblewiththemotherboardmaycausesystem
bootfailure.Theswitchisenabledbydefault,allowingmemoryre-trainingwhenthe
motherboardisunresponsiveduetomemoryproblems.TheMem_LEDwilllightup
whilere-training,andturnoffwhenthere-trainingiscomplete.
• Refertosection1.1.8 Onboard LEDs fortheexactlocationoftheMem_LED.
• TheMemOK!IIswitchdoesnotfunctionunderWindows
®
OSenvironment.
• Duringthetuningprocess,thesystemloadsandtestspretestproles.Ittakesabout
30secondsforthesystemtotestonesetofproles.Ifthetestfails,thesystem
rebootsandteststhenextsetofproles.Thesystemwillrebootmultipletimeswhen
training,oncethesystemhascompletedthetrainingprocesstheMem_LEDwillturn
off,pleaserefrainfromdoinganythingbeforetheMem_LEDturnsoff.
• Duetomemorytuningrequirement,thesystemautomaticallyrebootswheneach
proleistested.
• IfyouturnoffthecomputerandreplaceDIMMsduringthetuningprocess,thesystem
continuesmemorytuningafterturningonthecomputer.Tostopmemorytuning,turn
offthecomputerandunplugthepowercordforabout5–10seconds,thensetthe
MemOK!IIswitchtodisabled.
• InstallingDIMMsthatarenotcompatiblewiththemotherboardmaycausesystem
bootfailure.Theswitchisenabledbydefault,allowingmemoryre-trainingwhenthe
motherboardisunresponsiveduetomemoryproblems.TheMem_LEDwilllightup
whilere-training,andturnoffwhenthere-trainingiscomplete.
• EnsuretoreplacetheDIMMswithonesrecommendedintheMemoryQVL(Qualied
VendorsLists)atwww.asus.com.
• Thecomputerwillrebootmultipletimesduringthetuningprocess.
• WerecommendthatyoudownloadandupdatetothelatestBIOSversionfrom

www.asus.comafterusingtheMemOK!IIfunction.
ON
OFF
MemOK!_II
®
TUF Z390-PLUS GAMING MemOK! switch