System-Board Layouts; System-Board Connectors; System-Board Jumpers - Lenovo Flex System x220 Installation And Service Manual

• If the operating system stops functioning, you can press and hold the power button for more than 4
seconds to turn off the compute node.
Attention: Pressing the power button for 4 seconds forces the operating system to shut down
immediately. Data loss is possible.
• You can turn off the compute node through the CMM power command, the CMM web interface, or Flex
System Manager management software (if installed).
– For more information about the CMM power command, see the "Flex System
Chassis Management Module: Command-Line Interface Reference Guide" at
http://pic.dhe.ibm.com/infocenter/flexsys/information/topic/com.lenovo.acc.cmm.doc/cli_ command_
power.html.
– From the CMM web interface, select Compute Nodes from the Chassis Management menu.
For more information, see the the "Flex System Chassis Management Module: User's Guide" at
http://pic.dhe.ibm.com/infocenter/flexsys/information/topic/com.lenovo.acc.cmm.doc/ cmm_user_
guide.html. All fields and options are described in the CMM web interface online help.
– For more information about Flex System Manager management software,
see the "Flex System Manager Software: Installation and Service Guide" at
http://pic.dhe.ibm.com/infocenter/flexsys/information/topic/com.ibm.acc.8731.doc/product_
page.html.

System-board layouts

Use this information to locate the connectors, LEDs, jumpers, and switches on the system board.

System-board connectors

Use this information to locate compute node system-board components and connectors for optional devices.
The following illustration shows the system-board components, including connectors for user-installable
optional devices, in the compute node.
12
CMOS
DIMMs
Front battery
USB
SAS
backplane
ServeRAID
controller
Light path Internal
diagnostic USB
panel

System-board jumpers

Use this information to locate the system-board jumpers.
The following illustration shows the locations of the jumpers on the system board.
Microprocessor 2 I/O expansion 1
7
6
I/O expansion 3
DIMMs
1
Microprocessor 1
Fabric
(some models
only)
Internal
USB
I/O expansion 2
17
.
Chapter 1 Introduction