Dell XPS 8500 manual Sysfan

1	chassis fan connector	2	power connector (PWR2)
	(SYS_FAN 1)
3	processor socket	4	processor fan connector
			(CPU_FAN)
5	memory module connector	6	memory module connector
	(DIMM3)		(DIMM1)
7	memory module connector	8	memory module connector
	(DIMM4)		(DIMM2)
9	main power connector	10	password reset jumper (PSWD)
	(PWR1)
11	mSATA slot (MSATA1)	12	SATA 2.0 (3 Gb/s) drive connector
			(SATA 2)
13	SATA 2.0 (3 Gb/s) drive connector	14	front panel USB connector
	(SATA 3)		(F_USB3)
15	front panel USB connector	16	SATA 2.0 (3 Gb/s) drive connector
	(F_USB2)		(SATA 1)
17	CMOS reset jumper (RTCRST)	18	power button connector
			(F_PANEL)
19	front panel USB connector	20	SATA 3.0 (6 Gb/s) drive connector
	(F_USB1)		(SATA 0)
21	front panel USB connector	22	front panel audio connector
	(F_USB4)		(F_AUDIO1)
23	PCI-Express x1 card slot	24	PCI-Express x1 card slot
	(PCI-EX1_3)		(PCI-EX1_2)
25	PCI-Express x1 card slot	26	PCI-Express x16 card slot
	(PCI-EX1_1)		(PCI-EX16_1)
27	Mini-Card slot	28	battery socket (BATTERY)
	(PCIE_MINICARD)

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Technical Overview