Dell XPS 420 owner manual Memory Overview

book.book Page 104 Tuesday, November 27, 2007 10:29 AM

1	memory module	2	battery socket	3	SATA Connectors (2)
	connectors (1, 2, 3, 4)		(BATTERY)		(SATA0, SATA1)
4	front panel I/O	5	main power connector	6	SATA connectors (3)
	connector		(POWER)		(SATA2, SATA3,
					SATA4)
7	FlexBay USB	8	clear CMOS jumper	9	password jumper
	connector (9 pins)		(RTCRST)		(PSWD)
10	PCI Express x16 card	11	PCI Express x8 card	12	PCI Express x1 card
	connector		connector		connector
			(x4 electrical)
13	PCI card connectors	14	floppy drive connector	15	internal USB
			(FLOPPY)		connector
					connecting to
					FlexBay device
16	rear fan connector or	17	Processor fan	18	processor connector
	card cage fan		connector
	connector		(FAN_CPU)
	(FAN_CARD_CAGE)

19processor power connector (12VPOWER)

Memory

You can increase your computer memory by installing memory modules on the system board.

Memory Overview

•Memory modules should be installed in pairs of matched memory size, speed, and technology. If the memory modules are not installed in matched pairs, the computer will continue to operate, but with a slight reduction in performance. See the label in the upper-right corner of the module to determine the module’s capacity.

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Removing and Installing Parts