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ASUS NR-LSR motherboard user guide
1-9
CPU Socket 478. A 478-pin surface mount, Zero Insertion Force
(ZIF) socket for the Intel
®
Pentium
®
4 processor with 400 MHz
system bus that allows up to 3.2GB/s data transfer rate.
24/20-pin ATX power connector. This power connector is for an
ATX power supply.
Backplane bridge board connectors. These connectors are for
the bridge board that connects the motherboard to the backplane
board.
Flash ROM. This 4Mb firmware contains the programmable BIOS
program.
8-switch DIP (CLKSW). This 8-switch Dual Inline Package (DIP)
allows you to select the CPU frequency multiple.
ServerWorks
®
Champion south bridge (CSB5). The Champion
South Bridge (CSB5) primarily acts as a PCI to Low Pin Count
(LPC) bridge, but also supports several integrated functions
including dual-channel ATA/100 IDE controller, 4-port USB 1.1
interface, ACPI power management and detection, XIO-APIC, and
legacy functions 8237DMA, 8259APIC, and 8254 timer.
Daughterboard connectors. These connectors are for the
optional ASUS Server Management daughterboard.
LPC super I/O controller. This Low Pin Count (LPC) interface
provides the commonly used Super I/O functionality. The chipset
supports UART compatible serial ports, one parallel port with EPP
and ECP capabilities, a floppy drive, and PS/2 keyboard and
mouse.
ASUS ASIC. This chip performs multiple system functions that
include hardware and system voltage monitoring, IRQ routing,
among others.
LSI
®
SCSI controller. The LSI 53C1010R SCSI controller supports
up to 30 SCSI devices through the onboard dual-channel SCSI
connectors.
Ultra-160 SCSI connector (internal). This dual-channel 68-pin
Ultra-160 SCSI connector supports up to 30 SCSI devices, and
data transfers of 160Mbps.
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