Apple Macintosh Performa 6400 Series - Manual (Page 173)

2 With the ejector in the “open” position, align the DRAM DIMM in the DRAM sockets
as pictured.
IMPORTANT Do not touch the DIMM’s connectors. Handle the DIMM only by
the edges.
3 Push down on the DIMM until it snaps into place.
The ejector closes automatically.
4 Repeat steps 1–3 if you need to install another DRAM DIMM into the other slot.
5 If you have a High Performance Module to install, proceed to the next section, “Installing
a High Performance Module into the Cache Module Slot.” If you are finished installing
memory in your computer, proceed to “Closing the Computer.”
DRAM slot (1 of 2)
Connectors Notches
The DRAM DIMM is designed to fit into the
slot only one way. Be sure to align the notches
in the DIMM with the small ribs inside the slot.
Ribs (inside slot)
DRAM DIMM (Your DIMM’s shape
and components may vary.)
173 Installing Additional Memory