Asus P4B266-C User Manual page 19

South bridge controller. Referred to as the Intel I/O Controller
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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, and PCI interface.
DIP switches. This 10-switch Dual Inline Package (DIP) allows you
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to set the CPU external frequency.
ASUS ASIC. This chip performs multiple system functions that
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include hardware and system voltage monitoring, IRQ routing,
among others.
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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.
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Flash EEPROM. This 2Mb firmware contains the programmable
BIOS program.
15 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.
Audio controller. This C-Media 6-channel PCI audio chip supports
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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
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master PCI cards like SCSI or LAN cards with 133MB/s maximum
throughput.
18 LAN controller. This RealTek 8100 PCI LAN controller fully
supports 10BASE-T/100BASE-TX Ethernet networking.
(on LAN models only)
19 AGP slot. This Accelerated Graphics Port (AGP) slot supports 1.5V
AGP4X mode graphics cards for 3D graphical applications.
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PS/2 mouse port. This green 6-pin connector is for a PS/2 mouse.
ASUS P4B266-C motherboard user guide 1-7