DFI 486-OCV Plus User Manual page 28

Pentium OverDrive Ready System Board
TM
The jumpers below are for factory testing only and
should always be set to their default configurations.
Reconfiguring these jumpers will cause problems with
your 486-OCV Plus system board.
JP26: 1-2 On
JP31: 1-2 On
JP32: BIOS ROM Type Select
1-2 On: Flash RAM 28F001BX-T
2-3 On: Flash RAM 28F010 or 64KB ROM
2-21 u Installation Overview