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11
Key to Mainboard Components
Component
Description
CPUFAN1
Power connector for CPU cooling fan
DIMM 1, 2, 3
Three slots for 184-pin DRAM memory module
ATX1
Connector for ATX power supply
Socket 370
CPU socket
IDE1, IDE2
Primary and secondary IDE channels
LED1
Voltage Indicator for DDR DIMM socket
CASEOPEN1
Case open jumper
JP6, 7
CPU frequency select jumper
SIR1
SIR connector for infrared
FDD1
Connector for floppy disk drives
AGP1
Accelerated Graphics Port slot
J4
Extra MIC/line-out header
CD1
Audio connector for CD-ROM/DVD drive
CD2
Auxiliary connector for CD-ROM/DVD drive
ACR1
Advanced Communication Rise (ACR) slot
PCI1 ~ PCI5
Five 32-bit PCI slots
CNR1
Communications Networking Riser slot
BT1
3.3 volt battery for realtime clock
JP1
Clear the system CMOS jumper
WOL1
Connector for LAN wake up
WOM1
Connector for modem wake up
JP8
BIOS Flash protect jumper
USB2/USB3
Extra USB port headers
CASFAN1
Power connector for case cooling fan
PANEL1
Panel connector for switches and indicators
Note:
LED1 – This red indicator warns you that the computer is
still powered on and you should not install or uninstall memory
modules.