Lenovo Flex System x440 Compute Node Installation And Service Manual page 33

Description
Switch number
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
U9020-3 FPGA mux enable
U9020-4 Future use only
U9020-5, U9020-6 Selecting dongle serial port
MUX (U9812)
U9020-7, U9020-8 Selecting dongle serial port
MUX (U9811)
Switch setting
The default position is Open.
The default position is Open.
The default position is Open.
The default position is Open.
The default position is Open.
The default position is Open.
The default position is Open.
The default position is Open.
Closed, Closed Open,
Closed Closed, Open Open,
Open
Closed, Closed Open,
Closed Closed, Open Open,
Open
Definition
When the switch is in 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.
Changing this switch to the
Closed position forces the
compute node to boot from
the backup UEFI image.
Changing this switch 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.
Changing this switch to the
Closed position disables
WOL.
Changing this switch to the
Closed position forces the
compute node to use RTMM
ROM instead of flash.
Changing this switch to the
Closed position resets FPGA
Configuration Logic
Changing this switch to the
closed position enables WOL
and the front panel button.
Changing this switch to the
closed position to enable the
FPGA MUX keyboard
controls
BE3-1 TX/RXRTMM TX/
RXIMM TX/RX SIO TX/RX
BE3-2 TX/RX FPGA TX/RX
IMM TX/RX SIO RTS/CTS
.
Chapter 1 Introduction
23