Dell OptiPlex E1 - Manual (Page 25)

System Overview 1-17
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–5 VDC
fuses
core VCC +2.1 to +3.5 VDC
+3.3 VDC
power
management
and NIC logic
RTC/
NVRAM
+5 VDC
+5 VDC
+5 VDC
+5 VFP
+5 VDC
–5 VDC
+12 VDC
–12 VDC
+3 VDC
P2
+3.3 VDC
PWRGOOD
P1
POWER1
PSON#
+5 VFP
+5 VDC
+12 VDC
–12 VDC
PSON#
+5 VFP
+5 VDC
–5 VDC
+12 VDC
P3
+5 VDC
+12 VDC
–12 VDC
+12 VDC
+12 VDC
–12 VDC
3.5-inch
diskette drive
system
power
supply
battery
+5 VDC
–5 VDC
ISA1
ISA2
PCI1
PCI2
MICROPROCESSOR
PANEL
KYBD
MOUSE
DIMM_B
DIMM_C
main
memory
sockets
P4
FAN
RISER
optional
drive
P5
riser board
system board
internal
hard-disk drive
POWER2
processor
core regulator
+5 VDC
USB
+3.3 VDC
P1
NOTE: +5 VFP is routed to
the integrated NIC logic on
the system board and to P1
on the riser board.
–12 VDC