DFI LR102-B18D/B18S - Manual (Page 52)

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2
Hardware Installation
Standby Power LED
Standby
Power LED
This LED will light when the system is in the standby mode.
Important:
When the DRAM Power LED and/or Standby Power LED lit yellow, it indi-
cates that power is present on the DIMM sockets and/or PCI slots. Pow-
er-off the PC then unplug the power cord prior to installing any memory
modules or add-in cards. Failure to do so will cause severe damage to
the motherboard and components.