Dell 100-Mbps manual Power Distribution

		keyboard			system board
		controller	+3 VDC
						riser board
		power			battery
				RTC/
		management
				NVRAM			PCI1
		logic				+5 VDC
	P1
		POWER1				+12 VDC	through
	PWRGOOD						PCI5
						–12 VDC
	PSON#	PSON#			RISER
	+5 VFP	+5 VFP
system	+5 VDC	+5 VDC			+5 VDC	+5 VDC	ISA1,
power supply	–5 VDC	–5 VDC			–5 VDC	–5 VDC	ISA2
	+12 VDC	+12 VDC			+12 VDC	+12 VDC
	–12 VDC	–12 VDC			–12 VDC	–12 VDC
	P7
	+3.3 VDC
		POWER2
					+12 VDC	FAN
		main memory			+5 VFP
optional	P2	sockets				PANEL
					+5 VDC
drive		DIMM_A		FUSE	+5 VDC
						USB
	P3	DIMM_B
optional
				FUSE
drive		DIMM_C			+5 VDC	KYBD
	P4
3.5-inch
		DIMM_D			+5 VDC
diskette drive						MOUSE
internal	P5	MICROPROCESSOR		processor
				core regulator
hard-disk drive
		+2.1–3.5 VDC
	P6
internal		+3.3 VDC
hard-disk drive
		2ND_CPU
		+2.1–3.5 VDC
		+3.3 VDC
Figure 1-9. Power Distribution

System Overview 1-11