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ASUS P4P8X motherboard user guide
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ATX 12V connector. This power connector connects the 4-pin 12V plug from
the ATX 12V power supply.
CPU socket. A 478-pin surface mount, Zero Insertion Force (ZIF) socket for
the Intel
®
Pentium
®
4 Processor, with 800/533/400 MHz system bus that allows
4.3GB/s, and 3.2GB/s data transfer rates, respectively.
North bridge controller. The Intel
®
82865P Memory Controller Hub (MCH)
provides the processor interface with 533/400 MHz frequency, system
memory interface at 333/266MHz operation and an AGP interface that
supports AGP 3.0 specification including 8X Fast Write protocol. The MCH
interconnects to the south bridge ICH5 via the Intel
®
proprietary Hub Interface.
DDR DIMM sockets. These four 184-pin DIMM sockets support up to 4GB
system memory using unbuffered non-ECC PC2700/2100 DDR DIMMs.
ATX power connector. This 20-pin connector connects to an ATX power
supply. The power supply must have at least 1A on the +5V standby lead
(+5VSB).
Super I/O controller. This Winbond Low Pin Count (LPC) interface provides
the commonly used Super I/O functionality. The chipset supports a high-
performance floppy disk controller for a 360K/720K/1.44M/2.88M floppy disk
drive, a multi-mode parallel port, two standard compatible UARTs, and a Flash
ROM interface. This controller also integrates the ASIC for PC health
monitoring.
Floppy disk connector. This connector accommodates the provided ribbon
cable for the floppy disk drive. One side of the connector is slotted to prevent
incorrect insertion of the floppy disk cable.
IDE connectors. These dual-channel bus master IDE connectors support
Ultra DMA100/66, PIO Modes 3 & 4 IDE devices. Both the primary (blue) and
secondary (black) connectors are slotted to prevent incorrect insertion of the
IDE ribbon cable.
AGP 8X slot. This Accelerated Graphics Port (AGP) slot supports 0.8V/1.5V
AGP 8X mode graphics cards for 3D graphical applications.
SATA connectors. These connectors support Serial ATA HDDs and allows
for up to 150MB/s data transfer rate, faster than the standard Parallel ATA
with 133 MB/s.
Flash ROM. This 4Mb firmware contains the programmable BIOS program.
South bridge controller. The fifth-generation Intel I/O Controller Hub (ICH5)
is a subsystem that integrates various I/O functions including 2-channel
ATA100 bus master IDE controller, up to eight USB 2.0/1.1 ports, I/O APIC,
SMBus 2.0 controller, LPC interface, AC’97 2.2 interface, and PCI 2.2
interface. The ICH5 also contains the necessary arbitration and buffering for
efficient utilization of these interfaces.
Standby power LED. This LED lights up if there is a standby power on the
motherboard. This LED acts as a reminder to turn off the system power before
plugging or unplugging devices.
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