Dell Inspiron 3500 - Manual (Page 51)

Troubleshooting Your Computer 3-5
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Cables that connect external devices through the input/output (I/O) connectors
and ports on the computer.
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docking
connector optional internal
modem port
serial port
PS/2 keyboard/mouse
connector
monitor
connector infrared port
USB
connector
AC Adapter
connector
parallel port
audio jacks (3)