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2-7
Jumper Settings
Explanation of Jumpers
To modify the operation of the mother-
board, jumpers can be used to choose
between optional settings. Jumpers create
shorts between two pins to change the
function of the connector. Pin 1 is identified
with a square solder pad on the printed
circuit board.
Note: On two-pin jumpers,
"Closed" means the jumper is on,
and "Open" means the jumper is
off the pins.
LAN Ports Enable/Disable
Jumper JPL1 enables or disables Ethernet
LAN ports on the motherboard. See the
table on the right for jumper settings. The
default setting is enabled.
JUIDB1
VGA
BMC
JI2C1
A1SAi/A1SRi Series Motherboard
Rev. 1.00
JI2C2
Battery
JWD1
JF1
1
J3
SP1
USB2.0-0/1
USB3.0-0/1
IPMI_LAN
LAN2/LAN4
LAN1/LAN3
A
Marvell
PHY
BIOS
JBT1
CPU
A. LAN Ports Enable or
COM1
Disable
FAN3
FAN1
2-25
Chapter 2: Installation
GbE LAN Enable
Jumper Settings
Pin#
Definition
1-2
Enabled (default)
2-3
Disabled
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