Dell Latitude C840 User Guide - Page 31

Device Groups, Parallel Ports

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Do not be concerned if the Device Groups area does not list the names of all the components or devices you know are part of your computer. For example, you may not see a printer listed, although you know one is attached to your computer. Instead, the printer is listed as a parallel port. The computer recognizes the parallel port as LPT1, which is an address that tells the computer where to send outgoing information and where to look for incoming information. Because your printer is a parallel communications device, the computer recognizes the printer by its LPT1 address and identifies it as a parallel port. You can test your printer connection in the Parallel Ports tests.

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Do not be concerned if the
Device Groups
area does not list the names of all the components or devices you know are part of your computer. For example,
you may not see a printer listed, although you know one is attached to your computer. Instead, the printer is listed as a parallel port. The computer
recognizes the parallel port as LPT1, which is an address that tells the computer where to send outgoing information and where to look for incoming
information. Because your printer is a parallel communications device, the computer recognizes the printer by its LPT1 address and identifies it as a parallel
port. You can test your printer connection in the
Parallel Ports
tests.