1. Turn the system power off.

2. Unplug your keyboard or hold down one of the keys on the    keyboard

3. Power-on the system (you should get a keyboard error)

4. Notice the long string of numbers in the lower left hand corner of your screen. This is your BIOS identification string. It will look like one of these:

    51-0102-zz5123-00111111-101094-AMIS123-P

This indicates a motherboard with BIOS from 1991 to Present. The BIOS identification number for this BIOS identification string, which is in BOLD and in the third set of numbers, would be   zz5123.

   DINT-1123-04990-K8

This indicates a motherboard with BIOS from 1986 - 1990.The BIOS identification number for this BIOS identification string, which is in BOLD and is in the second set of numbers, would be 1123.
If the first BOLD number of the second set of numbers is:

1, 2, 8, or a letter- it is a NON-AMI Taiwanese manufactured motherboard
3, 4, or 5- it is a TRUE AMI motherboard
50 or 6- it is a NON-AMI US made motherboard
9- it is a Evaluation BIOS for a Taiwanese manufacturer.

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