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Knowing the Parts 2
USB Ports
Universal Serial Bus (USB) supports many USB compatible devices such as keyboards, pointing de-
vices, video cameras, modems, hard disk drives, printers, monitors, and scanners connected in a series
up to 12Mbits/sec. USB allows up to 127 devices to run simultaneously on a single computer, with
peripherals such as USB keyboards and some newer monitors acting as additional plug-in sites or hubs.
USB supports hot-swapping of devices so that peripherals can be connected or disconnected while the
Notebook PC is ON.
External Monitor Port
The 15-pin D-sub monitor port supports a standard VGA-compatible device such as a monitor or pro-
jector to allow viewing on a larger external display.
Parallel Port
The 25-pin D-sub parallel/printer port supports parallel devices such as printers, hard drives, removable
drives, or scanners.
Air Vent and Cooling Fan
The cooling fan turns ON when the temperature rises past a set threshold. The cooling fan is an extra
feature needed for upgrading to faster processors in the future. The air vents allow cool air to enter and
warm air to exit the Notebook PC. Do not block the air vents or else overheating may occur!
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