Dell D490 manual Inch drive bays

1-3	5.25-inch drive bays	Can hold a CD/DVD drive, or a Media Card Reader, floppy drive, or SATA hard
		drive in a 5.25-inch drive bay carrier.
		NOTE: The drive carriers are only for use in the 5.25-inch drive bays. The
		floppy-drive/ Media Card Reader and hard-drive carriers are not interchangeable.
4	5.25-inch drive bay with	Can hold a CD/DVD drive, or a Media Card Reader, floppy drive, or SATA hard
	special 3.5-inch drive	drive in a 5.25-inch drive bay carrier. The drive-panel plate shown here is only for
	panel plate	use with a floppy drive or Media Card Reader; it can be installed in front of any of
		the four 5.25-inch drive bays. For more information, see your User’s Guide.
		NOTE: The drive carriers are only for use in the 5.25-inch drive bays. The floppy drive/
		Media Card Reader and hard drive carriers are not interchangeable.
5	hard-drive activity light	The hard drive light is on when the computer reads data from or writes data to the
		hard drive. The light might also be on when a device such as your CD player is
		operating.
6	IEEE 1394 connector	Use the IEEE 1394 connector for high-speed data devices such as digital video
		cameras and external storage devices.

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