Jumper Settings; Explanation Of Jumpers; Cmos Clear; Front Side Bus Speed - American Megatrends StorTrends 1100-P User Manual

Jumper Settings

Explanation of Jumpers

To modify the operation of the motherboard, 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. See
the motherboard 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.

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 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.

Front Side Bus Speed

JP1 and JP2 are used to set the system (front side) bus speed for the processors. It is best
to keep these jumpers set to Auto. These jumpers are used together with the CPU Clock
setting in BIOS. See the table below for jumper settings.

Front Side Bus Speed (JP1, JP2)

JP1
Pins 1-2
Pins 2-3
No Connection
No Connection
Pins 2-3
38 StorTrends® 1100 User's Guide
Connector
Pins
3 2 1
Jumper
Cap
3 2 1
Setting
Pin 1-2 short
JP2
Pins 1-2
Pins 2-3
Pins 2-3
No Connection
No Connection
FSB Speed
Auto
100 MHz (x4)
133 MHz (x4)
Reserved
200 MHz (x4)