58 Installation and configuration C7085-90921
Using the parallel cable
The printer can connect to the computer with a bidirectional parallel cable (IEEE-1284C compliant)
(see Figure 3-2). Connect the male “C” connector to the printer and the male “B” connector to the
computer. HP recommends that the parallel cable length be no longer than 10 meters (30 ft) in
length. The cable (HP part number C2946A) is included with the HP Color LaserJet 4500 printer
and the 4550 printer. It must be purchased separately for the HP Color LaserJet 4500N, 4500DN,
4550N, 4550DN and 4550HDN printers.
Figure 3-2 Parallel cable with a “C” connector
Parallel interface
When used to describe a parallel interface, the term bidirectional indicates that the printer is able to
both receive data from the computer and send data to the computer through the parallel port.
Note To use the enhanced capabilities of the bidirectional parallel interface such as bidirectional
communication between the computer and printer, faster transfer of data, and automatic configuration
of printer drivers, your software application must support these capabilities.
When you are using multiple ports, you can adjust automatic I/O switching to maximize
performance by using the timeout feature. If data from other ports appears in the middle of your
print job, increase the I/O timeout value.
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