Supermicro X5DE8-GG, User Manual

Page: 38 / 90

2-14
SUPER X5DE8-GG/X5DEI-GG/X5DEE-M User's Manual
2-6 Jumper Settings
Explanation of
Jumpers
T o m o d i f y t h e o p e r a t i o n o f t h e
motherboard, jumpers can be used
t o c h o o s e b e t w e e n o p t i o n a l
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. See
the motherboard layout pages for
jumper locations.
N o t e : O n t w o p i n j u m p e r s ,
"Closed" means the jumper is on
and "Open" means the jumper is
off the pins.
Connector
Pins
Jumper
Cap
Setting
Pin 1-2 short
3 2 1
3 2 1
CMOS Clear
JBT1 is used to clear CMOS. Instead of pins, this
jumper consists of contact pads to prevent acciden-
tally clearing the contents of CMOS.
To clear CMOS,
1) First shut 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 sys-
tem.
Note: Do not use the PW_ON connector to clear
CMOS.