SCE USAtm993AN .... Jumper settings for Celeron processors.

The SCE 993AN Mainboard supports Celeron (66MHz) 266~667 MHz (SLOT 1 or PPGA).  Page 6 of the manual shows the CPU Ratio jumper settings from 2.0x ratio to 8.0x ratio.  For Celeron CPUs with multiplier greater than 8.0x ratio, you can just leave it to 8.0x, 7.5x, or 7.0x.  The SCE 993AN will allow the CPU to over-ride the jumper settings and operate at its correct multiplier ratio.

For example, if you have a Celeron 600Mhz CPU, you can leave the jumpers at 8.0x.  Then you will see the system boots up showing correctly at 600Mhz (66x9.0).