Asus P4B266 User Manual

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ASUS P4B266 motherboard user guide

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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 port, and a Flash ROM interface.

DIP switches. This 10-switch Dual Inline Package (DIP) allows you
to set the CPU external frequency.

Flash EEPROM. This 2Mb firmware contains the programmable
BIOS program.

South bridge controller. Referred to as the Intel I/O Controller
Hub 2 (ICH2) of the Intel 845D chipset, this controller provides the
I/O subsystem that allows access to the rest of the system. The
ICH2 integrates I/O functions such as system bus interface, Ultra
ATA/100, Low Pin Count (LPC) interface, Universal Serial Bus
(USB) 1.1 interface, PCI interface, and CNR interface.

ASUS ASIC. This chip performs multiple system functions that
include hardware and system voltage monitoring, IRQ routing,
among others.

Onboard LED. This onboard 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.

CNR slot. This slot is specifically designed for the Communications
and Networking Riser (CNR) card. The CNR supports V.90 analog
modem, HPNA, USB Hub, and the 10BASE-T/100BASE-TX
Ethernet networking.

Audio controller. This C-Media 6-channel PCI audio chip supports
legacy audio and HRTF 3D positional audio functions. The chip
also supports 24-bit S/PDIF In (0.5~5V) and S/PDIF Out (44.1K
and 48K formats) professional digital audio interface.
(on audio models only)

PCI slots. These six 32-bit PCI 2.2 expansion slots support bus
master PCI cards like SCSI or LAN cards with 133MB/s maximum
throughput.

AGP slot. This Accelerated Graphics Port (AGP) slot supports 1.5V
AGP4X mode graphics cards for 3D graphical applications.

This manual is related to the following products:

P4B266-SE