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ASUS A7N266-E User’s Manual
3. HARDWARE SETUP
3. H/W SETUP
Motherboard Settings
3) CPU:DRAM Frequency Setting (BSEL0, BSEL1)
This jumper sets the external CPU:DRAM frequency ratio for normal operation.
The default operates at 100:100 Mhz. Note: To make any changes to jumper
speed settings, the JEN jumper must be set to [1-2].
CPU DRAM BSEL0 BSEL1 JEN
133 133 [1-2] [1-2] [1-2]
133 100 [2-3] [1-2] [1-2]
100 133 [2-3] [2-3] [1-2]
100 100 [1-2] (Default) [2-3] (Default) [1-2]
A7N266-E
010101
®
A7N266-E Jumper Mode Setting
JEN
Enable
(Default)
23
Disable
12
2) Jumperfree Setting (JEN)
Normally, all changes to frequency settings can be made through BIOS
immediately upon starting up the computer. Therefore, the default setting for
this jumper, [2-3] enables easy BIOS adjustments. If the BSEL jumpers are
used, it is necessary to set this JEN jumper to [1-2].
A7N266-E
010101
®
A7N266-E CPU
External Frequency Selection
12
BSEL0
BSEL1
CPU 133MHz
(Default)
DRAM 133MHz
3
12
BSEL0
BSEL1
CPU 133MHz
DRAM 100MHz
3
12
BSEL0
BSEL1
CPU 100MHz
DRAM 133MHz
3
12
BSEL0
BSEL1
CPU 100MHz
DRAM 100MHz
3
JEN
JEN
JEN JEN