Changing A Jumper Setting - Intel AC450NX Product Manual

Installing jumpers across pins 5 and 6, 7 and 8, and 9 and 10 determines the processor core-to-FSB
frequency ratios. The bus frequency is 100 MHz. The core frequencies are based on the 100 MHz
bus frequency.
Table 18-2. J31 Jumpers for Bus Ratios
Pins 5 and 6
1
1
1
1
0
0
0
0
Key: 0 = open; 1 = closed
The jumper block provides three parking positions for storing the jumpers. They can be parked
across pins 11 and 12, 13 and 14, and 15 and 16.

Changing a Jumper Setting

1. Observe the precautions on page 115, "Safety Guidelines."
2. Turn off the server, and unplug the power cord.
3. Remove the top and left side covers. See Chapter 12, "Server Covers:
Removing/Reinstalling."
4. From the tables above, determine which jumper you need to move. Then move it to the new
location.
5. Reinstall the top and right side covers.
6. Plug in the power cord, turn on the server, and wait for POST to complete. See Chapter 3,
"Power-on Self Test: Description/Running."
7. Run the SSU to reconfigure your server. See Chapter 5, "System Setup Utility: When to
Run."
Chapter 18 CPU Baseboard: Description/Setting Configuration Jumpers
Pins 7 and 8 Pins 9 and 10
1 1
1 0
0 1
0 0
1 1
1 0
0 1
0 0
Bus Ratio Core Frequency (MHz)
Reserved
9:2 450
7:2 350
Reserved
5:1 500
4:1 400
3:1 300
Reserved
221