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2.5.6 ATX Feature Connector (CN6)
When the PCI-6870 is used as a stand alone card, both the 7-pin
main power connector (CN11) and the ATX feature connector
(CN6) must be connected to the power supply. If the PCI-6870 is
used with a passive backplane, the main power connector (CN11)
should not be connected as the card will be powered from the
backplane.
The ATX adapter cable (optional) is used to connect the PCI-6870
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 (CN6) on the board itself. This end
also has the 7-pin main power connector (CN11).
2.5.7 Parallel Port Connector (CN7)
The parallel port is normally used to connect the CPU card to a
printer. The PCI-6870 includes an on-board parallel port, accessed
through a 26-pin flat-cable connector, CN7. The card comes with
an adapter cable which lets you use a traditional DB-25 connector.
The cable has a 26-pin connector on one end and a DB-25
connector on the other, mounted on a retaining bracket. The
bracket installs at the end of an empty slot in your chassis, giving
you access to the connector.
The parallel port is designated as LPT1, and can be disabled or
changed to LPT2 or LPT3 in the system BIOS setup.
To install the bracket, find an empty slot in your chassis. Unscrew
the plate that covers the end of the slot. Screw in the bracket in
place of the plate. Next, attach the flat-cable connector to CN7 on
the CPU card. Wire 1 of the cable is red or blue, and the other
wires are gray. Make sure that wire 1 corresponds to pin 1 of CN7.
Pin 1 is on the right side of CN7.
17
Chapter 2 Installation
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