1.4.2 Core specifications

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ASUS EZ Plug™ +12V connector. This ASUS patented auxilliary power connector is used if you don’t have an ATX +12V power supply. Connect a 4-pin device connector from a standard power supply to this connector to provide sufficient power to the CPU.

ATX 12V connector. This power connector connects the 4-pin 12V plug from the ATX 12V power supply.

DIP switches (DSW1). This 6-switch Dual Inline Package (DIP) allows you to set the CPU external frequency.

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, respectively.

North bridge controller. The Intel® 845E Memory Controller Hub (MCH) provides the processor interface with 533/400MHz frequency, system memory interface at 133/100MHz operation, and 1.5V AGP interface that supports AGP 2.0 specification including 2X/4X Fast Write protocol. The MCH interconnects to the south bridge ICH4 via the Intel proprietary Hub Interface.

DDR DIMM sockets. These three 184-pin DIMM sockets support up to 2GB system memory using unbuffered ECC or non-ECC PC2100/1600 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.

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).

South bridge controller. The fourth-generation Intel I/O Controller Hub (ICH4) is a subsystem that integrates various I/O functions including 2-channel ATA/100 bus master IDE controller, up to six USB 2.0/1.1 ports, I/O APIC, SMBus 2.0 controller, LPC interface, AC’97 2.2 interface, PCI 2.2 interface, and integrated LAN controller. The ICH4 also contains the necessary arbitration and buffering for efficient utilization of these interfaces.

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Chapter 1: Product introduction