Asus A7N266 CPU, JEN, Note, BSEL0, 2)Jumperless Setting (JEN), 3)CPU:DRAM Frequency Setting (BSEL0, BSEL1)

SETUP H/W .3

Settings Motherboard

3.HARDWARE SETUP

2)Jumperless 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

JEN

1 2 2 3

DisableEnable (Default)

A7N266 Jumper Mode Setting

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	1	2	3	1	2	3
			JEN			JEN
			BSEL0			BSEL0
			BSEL1			BSEL1
			CPU 133MHz			CPU 133MHz
			DRAM 133MHz			DRAM 100MHz
			1	2	3	1	2	3
			JEN			JEN
			BSEL0			BSEL0
			BSEL1			BSEL1
			CPU 100MHz			CPU 100MHz
			DRAM 133MHz			DRAM 100MHz
A7N266 CPU						(Default)
External Frequency Selection

18 ASUS A7N266 User’s Manual