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5
Introducing the Motherboard
Table of Motherboard Components
This concludes Chapter 1. The next chapter explains how to install the motherboard.
1 CPU Socket
LGA775 socket for P4/Celeron CPUs
2 CPU_FAN
CPU cooling fan connector
3 DIMM1~DIMM4
184-pin DDR SDRAM slots
6 ATX1
Standard 20-pin ATX power connector
5 FDD1
Floppy disk drive connector
7 IDE1
Primary IDE connector
8 IDE2
Secondary IDE connector
11 CLR_CMOS
Clear CMOS jumper
14 BIOS_WP
BIOS flash protect jumper
13 PANEL1
Front panel switch/LED header
23 AGP1
AGP Express slot
15 USB3-4
Front Panel USB headers
21 PCI1~PCI3
32-bit add-on card slots
9 SPK1
Speaker header
20 CD_IN
Analog audio input connector
24 AUDIO1
Front panel audio header
26 ATX12V
4-pin +12V power connector
25 SYS_FAN
Case cooling fan connector
LABEL COMPONENT
18 CNR1*
Communications Networking Riser slot
19 SPDIFO1
SPDIF out header
12 SATA1~2
Serial ATA connectors
10 PWR_FAN
Power cooling fan connector
17 COM2
Onboard serial port header
4 IR1
Onboard infrared header
16 1394A2*
Onboard 1394a header
“*” stands for optional components.
22 JP4
LAN Enable/Disable jumper
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