Supero 2027R-AR24, User Manual

Page: 71 / 126

Chapter 5: Advanced Serverboard Setup
5-23
5-9 Jumper Settings
Explanation of Jumpers
To modify the operation of the
serverboard, jumpers can be used
to choose between optional settings.
Jumpers create shorts between two
pins to change the function of the con-
nector. Pin 1 is identi
fi ed with a square
solder pad on the printed circuit board.
See the serverboard layout pages for
jumper locations.
Note:
On a two-pin jumper, "Closed"
means the jumper is on both pins and
"Open" means the jumper is either on
only one pin or completely removed.
Connector
Pins
Jumper
Setting
3 2 1
3 2 1
CMOS Clear
JBT1 is used to clear CMOS (which will also clear any passwords). Instead of pins,
this jumper consists of contact pads to prevent accidentally clearing the contents
of CMOS.
To clear CMOS,
1. First power down the system and unplug the power cord(s).
2. With the power disconnected, short the CMOS pads with a metal object such
as a small screwdriver.
3. Remove the screwdriver (or shorting device).
4. Reconnect the power cord(s) and power on the system.
Note: Do not use the PW_ON connector to clear CMOS.
JLAN1/JLAN2 Enable/Disable
Use JPLAN1 to enable/disable LAN
Ports 1/2. See the table on the right
for jumper settings. The default setting
is Enabled.
JLAN1/2 Enable/Disable
Jumper Settings
Jumper Setting De fi nition
1-2 Enabled (default)
2-3 Disabled