HP Color LaserJet CP3505 Printer series - Manual (Page 141)

5. Holding the DIMM by the edges, align the notch on the DIMM with the bar in the DIMM slot at an
angle and firmly press the DIMM into the slot until it is fully seated. When installed correctly, the
metal contacts are not visible.
6. Push down on the DIMM until both latches engage the DIMM.
NOTE: If you have difficulty inserting the DIMM, make sure that the notch on the bottom of the
DIMM is aligned with the bar in the slot. If the DIMM still does not go in, make sure that you are
using the correct DIMM type.
7. Align the edge of the formatter board in the tracks at the top and bottom of the slot, and then slide
the board back into the printer. Push the formatter firmly until you hear the formatter latches click
into place.
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