Installing a Flash SIMM into the Hewlett Packard LaserJet 4, 4M, 4 Plus, 4M Plus or LaserJet 5 Printers
SIMM boards can be damaged by small amounts of static electricity. Wear an antistatic wrist strap or touch the surface of the antistatic package before removing the board. When handling the board, wear an antistatic wrist strap or frequently touch the antistatic bag or bare metal on the printer.
Switch the printer OFF, unplug the power cord, and lift the printer's top cover up as far as it will go.
Push the two right side cover release buttons. On the HP Laserjet 5, you will need to slide the right side panel to the rear to remove it. It may be held in place with a screw at the top, rear corner of the right side panel.
Remove the right side cover.
Use a Phillips #2 screwdriver to loosen the captive screw holding the SIMM door, and open the door.
Through the open door, you can see the four SIMM slots. For easiest installation, fill the slots from right to left, starting with slot 1 (see inset).
Remove the SIMM board from the antistatic package. Hold the board with your forefingers on the side edges and your thumbs against the back edge. Hold the board so the notch on one end is on the bottom and the metal teeth face toward the SIMM slot.
Install the SIMM Board:
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