IBM 79463AU, Installation And User Manual

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System-board switches and jumpers
Some server models come with the Pass 8 level system board or the Pass 9 level
system board. The Pass 8 level system board does not have an identifying mark.
The Pass 9 level system board is identifiable by P9, as indicated in the illustration
in “Pass 9 level system board” on page 40. If the system board is updated in the
future, it will also show the pass level on the system board. The functionality of the
two system boards are equivalent except the switch blocks. The functions of the
switch blocks on each of these system boards will differ, depending on the level of
the system board that is installed in your server. The following sections describe the
switches and jumpers for each of these system boards.
Pass 8 level system board
If your server has the Pass 8 level system board, the following illustration shows the
location and description of the switches and jumpers:
Note: If there is a clear protective sticker on the top of the switch block, you must
remove and discard it to access the switch.
The following table describes the jumpers on the Pass 8 level system board.
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IBM System x3550 M2 Types 4198 and 7946: Installation and User’s Guide