HP Netserver E Server series - Manual (Page 37)

Chapter 4 Installing Additional Memory
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9. Spread the two retaining latches on the slot outward. See Figure 4-3.
10. Align the notches on the DIMM with the keys on the slot.
See Figure 4-3.
Retaining Latches
DIMM Slot
Keys
Notches
Figure 4-3. DIMM to Slot Alignment
11. Holding the DIMM at 90 degrees to the system board, press the DIMM
fully into the slot until the retaining latches close. See Figure 4-4.
If the latches do not close, the DIMM is not inserted correctly.