System-board switches and jumpersThe following illustration shows the switches and jumpers on the system board.Any switches or jumpers on the system board that are not shown in the illustrationare reserved. See the section about recovering the basic input/output system(BIOS) code in the Problem Determination and Service Guide on the IBM System xDocumentation CD for information about using the boot block recovery jumper.Boot blockrecovery jumper(J42)Switch block(SW2)SAS controller jumperReserved (J89)Pin 1Table 2 on page 22 describes the function of each switch on the switch block.Chapter 2. Installing optional devices 21
