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System-board jumpers

This section describes the jumpers on the system board.

Figure 1. System board jumpers
System board jumpers
Table 1. System board jumpers.

This is the system board jumpers table with three column headings. This first column is jumper number. The second column is jumper name. The third column is jumper setting.

Jumper numberJumper nameJumper setting
CN14Clear CMOS jumper
  • Pins 1 and 2: Normal (default) - This keeps the CMOS data.
  • Pins 2 and 3: This clears the CMOS data such as power-on password and loads the default UEFI settings.

Note 2

J2UEFI boot recovery jumper
  • Pins 1 and 2: Normal (default) Loads the primary firmware ROM page.
  • Pins 2 and 3: Loads the secondary (backup) firmware ROM page.

Notes 1 and 2

J9IMM TPM jumper
  • Pins 1 and 2: Normal (default) TPM not physical present.
  • Pins 2 and 3: TPM physical present.
Note
  1. If no jumper is present, the server responds as if the pins are set to 1 and 2.
  2. Changing the position of the UEFI recovery jumper from pins 1 and 2 to pins 2 and 3 before the server is turned on sets the UEFI recovery process. Do not change the jumper pin position after the server is turned on. This can cause an unpredictable problem.

Important:

  1. Before you change any switch settings or move any jumpers, turn off the server; then, disconnect all power cords and external cables. (Review the information on pageSafety, Installation guidelines, Handling static-sensitive devices, and Turning off the server.
  2. Any system-board switch or jumper blocks that are not shown in the illustrations in this document are reserved.