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Chapter 4: Motherboard Connections
Manufacturing Mode Select
Close JPME2 to bypass SPI flash security and force the system to use the Manufacturing
Mode, which will allow you to flash the system firmware from a host server to modify system
settings.
Manufacturing Mode Select
Jumper Settings
Jumper Setting
Definition
Pins 1-2
Normal (Default)
Pins 2-3
Manufacturing Mode
JVRM1 (VRM SMB Clock to BMC)
Jumper Settings
Jumper Setting
Definition
Pins 1-2
Enable
Pins 2-3
Disable
JVRM1 (VRM SMB Data to BMC)
Jumper Settings
Jumper Setting
Definition
Pins 1-2
Enable
Pins 2-3
Disable
I
2
C Bus for VRM
Jumpers JVRM1 and JVRM2 allow the VRM SMB Clock and Data to access the Baseboard
Management Controller (BMC).
4.5 LED Indicators
LAN LEDs
The LAN ports are located on the IO
Backplane on the motherboard. Each
Ethernet LAN port has two LEDs. The
yellow LED on the right side of the LAN port
indicates activity. Link LED, located on the
left may be green, amber or off indicating
the speed of the connection. See the tables
at right for more information.
LAN1/2 LED
(Connection Speed Indicator)
LED Color
Definition
Off
No Connection or 10 Mb/s
Green
100 Mb/s
Amber
1 Gb/s
