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Chapter 7: Motherboard Connections
7.3 Jumpers
Explanation of Jumpers
To modify the operation of the motherboard, jumpers are used to choose between optional
settings. Jumpers create shorts between two pins to change the function associated with it.
Pin 1 is identified with a square solder pad on the printed circuit board. See the motherboard
layout
for jumper locations.
Note:
On a two-pin jumper, "Closed" means the jumper is on both pins and "Open" indicates
the jumper is either on only one pin or has been completely removed.
Connector
Pins
Jumper
Setting
3 2 1
3 2 1
JBT1 contact pads
ME Recovery
JPME1 is used for ME Firmware Recovery mode, which will limit system resource for essential
function use only without putting restrictions on power use. In the single operation mode,
online upgrade will be available in Recovery mode.
ME Recovery
Jumper Settings
Jumper Setting
Definition
Pins 1-2
Normal (Default)
Pins 2-3
ME Recovery
CMOS Clear Contacts
JBT1 is used to clear CMOS. Instead of pins, this jumper consists of contact pads. See
Chapter 10
for more information.
