DIMM installation guidelines
When installing a DIMM, observe the following guidelines:
Before seating the DIMM, open the DIMM slot and align the DIMM with the slot.
To align and seat the DIMM, use two fingers to hold the DIMM along the side edges.
To seat the DIMM, use two fingers to apply gentle pressure along the top of the DIMM.
For more information, see the Hewlett Packard Enterprise website.