HP DL740 - ProLiant - 4 GB RAM User Manual page 105

Installing Hardware Options, Hot-Plug
Each memory cartridge has two LEDs located on it. The memory cartridge LEDs are
used to determine the power status of the memory cartridge and whether or not it
requires maintenance attention.
Figure 5-4: Memory cartridge LEDs
Item Description
1 Cartridge attention LED
2 Cartridge power LED
5-6 HP ProLiant DL740 Server User Guide