System-board switches and jumpersSome server models come with the Pass 8 level system board or the Pass 9 levelsystem 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 illustrationin “Pass 9 level system board” on page 40. If the system board is updated in thefuture, it will also show the pass level on the system board. The functionality of thetwo system boards are equivalent except the switch blocks. The functions of theswitch blocks on each of these system boards will differ, depending on the level ofthe system board that is installed in your server. The following sections describe theswitches and jumpers for each of these system boards.Pass 8 level system boardIf your server has the Pass 8 level system board, the following illustration shows thelocation and description of the switches and jumpers:Note: If there is a clear protective sticker on the top of the switch block, you mustremove and discard it to access the switch.The following table describes the jumpers on the Pass 8 level system board.38 IBM System x3550 M2 Types 4198 and 7946: Installation and User’s Guide
