User's Manual

ASUS PRIME Z270-A Series
1-13
Chapter 1
1.1.8 Onboard LEDs
1. POST State LEDs
ThePOSTStateLEDsprovidethestatusofthesekeycomponentsduringPOST
(Power-OnSelf-Test):CPU,memorymodules,VGAcard,andharddiskdrives.Ifan
errorisfound,thecriticalcomponent’sLEDstayslitupuntiltheproblemissolved.
2. Standby Power LED
ThemotherboardcomeswithastandbypowerLED.TheLEDlightsuptoindicatethat
thesystemisON,insleepmode,orinsoft-offmode.Thisisareminderthatyoushould
shutdownthesystemandunplugthepowercablebeforeremovingorplugginginany
motherboardcomponent.TheillustrationbelowshowsthelocationoftheonboardLED.