Micronics 60/66MHz - Manual (Page 16)

Micronics M5Pi System Board Manual
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Table 2-11 lists reserved jumper settings. Do not reconfigure these jumpers.
Jumper Function Setting
W1 Normal (default)
For Micron DRAM only open
close
W2 Reserved open
W8 Reserved 1-2
W9 Reserved 1-2
W12 PS/2 Mouse does not use IRQ12 (AT Version)
PS/2 Mouse uses IRQ12 (PS/2 Version) open
close
W13 Reserved 1-2
W18 Reserved 1-2
W21 Reserved 2-3
J30 Reserved (60 MHz only) open
J31 Reserved- do not modify
Table 2-11 Reserved Jumper Settings