74 Adding Parts
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System Board
memory module
connectors
(DDR1, DDR2)
floppy drive
connector
(J18)
CD drive
connector (J20)
main power
connector
(J21)
microprocessor
connector (U16)
fan connector (J14)
modem telephony
connector (J25)
back of computer
12-V power
connector (J10)
hard drive
connector (J23)
battery socket (BT1)
control panel
connector (J24)
password
jumper (JP1)
PCI card slots (3)
(PCI1, PCI2, PCI3)
CMOS jumper
(CMOS)
front-panel I/O
connector (J16)
CD audio
connector (J8)
power indicator
(LED1)