Figure 3-9 Orienting Yourself To The Iris Indigo R4000 Family Simm; Figure 3-10 Tilting The Simm Up To A Vertical Position - Silicon Graphics IRIS Indigo Owner's Manual

Chapter 3: Installing Memory
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Using both hands, grasp the top of the SIMM so the notch in the bottom corner
of the SIMM is on your left, as shown in Figure 3-9.
Notch
This side faces you.
This side faces away from you.
Figure 3-9 Orienting Yourself to the IRIS Indigo R4000 family SIMM
Tip the top of the SIMM toward you, and press the SIMM securely into the
socket at a 45-degree angle to the board.
Tilt the SIMM up into a vertical position, as shown in Figure 3-10.
The SIMM is positioned correctly when the latches on both sides of the SIMM
socket are hugging the edges of the SIMM. You will not hear a snapping sound
when the SIMM is pushed into place.
Figure 3-10 Tilting the SIMM Up to a Vertical Position