Ports
An interface on a computer to which you can connect a device. Personal computers have various types of ports. Internally,
there are several ports for connecting disk drives, display screens, and keyboards. Externally, personal computers have ports
for connecting modems, printers, mice, and other peripheral devices.
A Typical Dell Dimension(8300 & 8400) Back and Front Panel
Externally accessible: (back Panel)
Serial
one 9- pin connector; 16550-compatible on
the back I/O panel
Parallel
one 25-hole connector (bidirectional) on the
back
I/O panel
Video
15-hole connector
Keyboard
6-pin PS/2 on the back I/O panel
Mouse
6-pin PS/2 on the back I/O panel
USB six
USB- 2.0 compliant connectors on the
back
I/O panel
NIC RJ45
connector
5.1 Audio Five
back miniature connectors for line-in,
line-out, microphone, surround, and enter/LFE
channel
Externally accessible: (Front
Panel)
USB
two USB- 2.0 compliant connectors on the
front I/O panel
Audio one
miniature connector for headphones.
