Advantech AIMB-258 - Manual (Page 28)

AIMB-258 User Manual 20
1.14.2 CPU Fan Connector (CPUFAN1)
Caution! ! Do not forget to connect the fan cables to the fan connectors. Insuf-
ficient air flow inside the system may damage the motherboard
components, and hardware monitoring errors can occur if you fail
to plug this connector.
! These are not jumpers! DO NOT place jumper caps on the fan
connectors.