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Chapter 1: Product introduction
DIP switches. This 5-switch Dual Inline Package (DIP) allows you
to set the CPU external frequency.
ATX 12V connector. This power connector is for the 4-pin 12V
plug from an ATX 12V power supply.
CPU socket. A 478-pin surface mount, Zero Insertion Force (ZIF)
socket for the Intel
®
Pentium
®
4 Processor, with 533/400 MHz
system bus that allows 4.3GB/s and 3.2GB/s data transfer rates.
North bridge controller. The Intel
®
845G Graphics Memory
Controller Hub (GMCH) provides the processor interface with
533/400 MHz frequency, system memory interface at 133/100MHz
operation, and 1.5V AGP interface that supports AGP 2.0
specification including 4X/2X Fast Write protocol. The integrated
graphics accelerator delivers 3D/2D video capabilities and a high
bandwidth access to graphics data in the system memory at a
2.2GB/s or 1.6GB/s. The GMCH interconnects to the south bridge
ICH4 via the Intel
®
proprietary Hub Interface.
DDR DIMM sockets. These two 184-pin DIMM sockets support up
to 2GB using unbuffered non-ECC PC2100/1600 DDR DIMMs.
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).
Super I/O controller. This 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, a Standard Infrared (SIR), one MPU-401 UART
mode compatible MIDI/game interface, and a Smart Card Reader
interface.
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 up to four 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.
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1.4.2 Core specifications