20
IBM Flex System x440 Compute Node Types 7917 and 2584: Installation and Service Guide
Switch number
Description
U52-4
Boot backup IMM2
U52-5
Boot backup UEFI
U52-6
IMM force update
U52-7
Wake on LAN (WOL)
disable
U52-8
Real time management
module (RTMM) flash
bypass
U9020-1
Asynchronous reset to
configuration logic of
FPGA
U9020-2
Power permission
Switch setting
Definition
The default position is
When the switch is in
Open.
the default Open
position, the compute
node will boot by
using the primary
IMM2 firmware. When
the switch is in the
Closed position, the
compute node will
boot by using a
backup of the IMM2
firmware.
The default position is
Changing this switch
Open.
to the Closed position
forces the compute
node to boot from the
backup UEFI image.
The default position is
Changing this switch
Open.
to the Closed position
bypasses the
operational firmware
image and performs a
IMM firmware update,
if the normal firmware
update procedure
results in an
inoperative IMM.
Note: Use this jumper
only if the normal
firmware update
procedure fails and the
operational firmware
image is corrupted.
Use of this jumper
disables normal
baseboard
management controller
operation.
The default position is
Changing this switch
Open.
to the Closed position
disables WOL.
The default position is
Changing this switch
Open.
to the Closed position
forces the compute
node to use RTMM
ROM instead of flash.
The default position is
Changing this switch
Open.
to the Closed position
resets FPGA
Configuration Logic
The default position is
Changing this switch
Open.
to the closed position
enables WOL and the
front panel button.
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