NEC 870 - SuperScript B/W Laser Printer Online User's Manual page 92

Chapter 7: Printer Options
Caution! Do not touch any part of the
controller board with your hands.
5. Locate the memory socket on the controller
board. Hold the module so that the metal edge
faces toward the memory socket.
6. Hold the module at an angle and push it
firmly into the socket, being careful not to
touch the connection points along the edge of
the SIMM.
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7. Press the module down until it clicks into
place. Make sure both ends of the SIMM click
securely into place.