Atx Feature Connector (Cn27) - Advantech PCA-6751 Series User Manual

2.24 ATX Feature Connector (CN27)

When the PCA-6751 is used as a standalone card, both the main
power connector (CN20) and the ATX feature connector (CN27) must
be connected to the power supply. If the PCA-6751 is used with a
passive backplane, the main power connector (CN20) should not be
connected. This is because the card will be powered from the back-
plane.
(P8) 6-pin in backplane
(P9) 6-pin in backplane
The ATX adapter cable (provided) is used to connect the PCA-6751
to the ATX power supply. The ATX adapter cable has different
connectors at both ends. On one end is the ATX 20-pin (female type)
which connects to the (male) ATX power supply source. The other
end has a 3-pin connector (female type) which connects to the ATX
feature connector (CN27) on the board itself. This end also has the
6-pin main power connector (P8) and a 6-pin connector (P9) which is
used when the board is mounted on a passive backplane.
28 PCA-6751 Series User's Manual
To ATX feature
connector (CN27)
P 8 P 8
P 9 P 9
20-pin female connector
Figure 2-4: ATX adaptor cable
ATX power supply source