11 AIMB-258 User Manual
Chapter 1 Product Introduction
1.12 Central Processing Unit (CPU) for AIMB-258
The motherboard AIMB-258 comes with a surface mount 478-pin Zero Insertion
Force (ZIF) socket designed for the Intel® Pentium® M / Celeron® M processor
(Supports mPGA478M, Micro-FCPGA).

Table 1.7: JWDT1: Watchdog Timer Output Option

Closed Pins Result
1-2 NC
2-3* System Reset*
*Default

Table 1.8: JOBS: HW monitor

Closed Pins Result
1-2* Close: Enable OBS Alarm [Default]
1-2 Open: Disable OBS Alarm
*Default
11
NC, 1-2 closed System Reset, 2-3 closed
Close Open
12 12
Take one of the marked corner (with gold
triangle) on the CPU. This mark should
match a specific corner on the socket to
ensure correct installation.
Note!
!
Make sure the AC power is off before you install the CPU.
!
If installing a dual-core CPU, connect the CPU fan cable to the
CPUFAN1 connector to ensure system stability.
Gold Mark