Presario 2281 System Board
Jumper Settings
Bus Frequency
CLK2 |
CLK1 |
CLK0 |
Processor Bus |
PCI Bus |
Processor |
2-3 |
2-3 |
2-3 |
50 MHz |
25 MHz |
|
2-3 |
2-3 |
1-2 |
75 MHz |
33 MHz |
M II-300 (225/75) |
2-3 |
1-2 |
2-3 |
83.3 MHz |
33 MHz |
M II-300 (250/83) |
2-3 |
1-2 |
1-2 |
68.5 MHz |
34.25 MHz |
|
1-2 |
2-3 |
2-3 |
55 MHz |
27.5 MHz |
|
1-2 |
2-3 |
1-2 |
75 MHz |
37.5 MHz |
|
1-2 |
1-2 |
2-3 |
60 MHz |
30 MHz |
|
1-2 |
1-2 |
1-2 |
66.8 MHz |
33 MHz |
All other supported processors |
J29 Processor Core Voltage
Core Voltage |
J29 1-2 |
J29 3-4 |
J29 5-6 |
J29 7-8 |
Processor |
2.0 |
OFF |
OFF |
OFF |
OFF |
|
2.1 |
OFF |
OFF |
OFF |
ON |
|
2.2 |
OFF |
OFF |
ON |
OFF |
K6-2 |
2.3 |
OFF |
OFF |
ON |
ON |
|
2.4 |
OFF |
ON |
OFF |
OFF |
|
2.5 |
OFF |
ON |
OFF |
ON |
|
2.6 |
OFF |
ON |
ON |
OFF |
|
2.7 |
OFF |
ON |
ON |
ON |
|
2.8 |
ON |
OFF |
OFF |
OFF |
|
2.9 |
ON |
OFF |
OFF |
ON |
M II |
3.0 |
ON |
OFF |
ON |
OFF |
|
3.1 |
ON |
OFF |
ON |
ON |
|
3.2 |
ON |
ON |
OFF |
OFF |
|
3.3 |
ON |
ON |
OFF |
ON |
|
3.4 |
ON |
ON |
ON |
OFF |
|
3.5 |
ON |
ON |
ON |
ON |
J30 Processor DLL Voltage J17 CMOS
2-3 |
1-2 |
Normal |
||
1-2 |
All supported Processors |
2-3 |
Clear CMOS |
Processor Speed Multiple
FREQ2 |
FREQ 1 |
FREQ 0 |
P54C |
P55C/M2 |
K6-2 |
Notes |
NONE |
2-3 |
2-3 |
2.5 |
2.5 |
- |
|
NONE |
2-3 |
1-2 |
3.0 |
3.0 |
- |
M II-300 (225/75) M II-300 (250/83) |
NONE |
1-2 |
2-3 |
2.0 |
2.0 |
- |
|
NONE |
1-2 |
1-2 |
1.5 |
3.5 |
- |
M II-300 (233/66) |
2-3 |
2-3 |
2-3 |
- |
- |
4.5 |
K6-2 (300/66) |
2-3 |
2-3 |
1-2 |
- |
- |
5.0 |
K6-2 (333/66) |
2-3 |
1-2 |
2-3 |
- |
- |
4.0 |
|
2-3 |
1-2 |
1-2 |
- |
- |
5.5 |
|
1-2 |
2-3 |
2-3 |
- |
- |
2.5 |
|
1-2 |
2-3 |
1-2 |
- |
- |
3.0 |
|
1-2 |
1-2 |
2-3 |
- |
- |
2.0 |
|
1-2 |
1-2 |
1-2 |
- |
- |
3.5 |