1.4.2 Core specifications

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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.

3CPU 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.

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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.

6ATX 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).

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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.

9IDE 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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Chapter 1: Product introduction