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Chapter 1: Product introduction
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 6.4GB/s, 4.3GB/s, and 3.2GB/s data transfer rates,
respectively. The socket will support the Intel Prescott CPU when
available.
North bridge controller. The Intel
®
875P Memory Controller Hub (MCH)
provides the CPU interface, DDR interface, AGP interface, and Hub
Interface. The MCH manages the flow of information between these
interfaces. Designed for use with the Intel
®
Pentium 4/Celeron
processor, the MCH provides the processor interface with 800/533/400
MHz frequency, system memory interface with up to 6.4GB/s bandwidth
in dual-channel mode, and 0.8V/1.5V AGP Interface Specification 3.0
that supports 8X/4X Fast Write protocol. The MCH interconnects to the
south bridge ICH5R via the Intel
®
proprietary Hub Interface.
ATX 12V connector. This power connector connects the 4-pin 12V plug
from the ATX 12V power supply.
DDR DIMM sockets. These four 184-pin DIMM sockets support up to
4GB system memory using unbuffered ECC or non-ECC PC3200/
PC2700/PC2100 DDR DIMMs.
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 DMA/100/66, 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.
ATX power connector. This 20-pin connector connects to an ATX 12V
power supply. The power supply must have at least 1A on the +5V
standby lead (+5VSB).
AGP Pro/8X slot. This Accelerated Graphics Port (AGP) Pro slot
supports 0.8V/1.5V AGP 8X mode graphics cards for 3D graphical
applications and delivers up to 2.1GB/s bandwidth.
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.
Flash ROM. This 4Mb firmware hub (FWH) contains the programmable
BIOS program.
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1.4.2 Core specifications