Specifications

Chapter 3 Hardware
ReadyBoard 800 Reference Manual 55
CPU Fan (J7)
Table 3-26 lists the pins and signals of the CPU Fan and it has 3 pins, single row, with 0.100" pin
spacing.
Table 3-26. CPU Fan (J7)
Pin # Signal Description
1 Fan_Tach Fan Tachometer – This signal indicates Fan speed.
2 +12V +12.0 volts DC +/- 5%
3 GND Ground
Note: The shaded area denotes power or ground.
NOTE The ReadyBoard 800 provides the pass through +12 volts on the Power In
(J2) connector to the CPU fan (J7) connector, the PCI-104 connector (J3),
and the LVDS connector (J14).
CAUTION To prevent damage to the 1.8 GHz CPU, you must supply +12
volts to the Power In connector (J2) for the fan voltage on the CPU
Fan connector (J7). The +12 volt fan will only operate on the +12
pass through voltage provided by Power In connector (J2).