Asus P4B-LX User Manual
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Chapter 1: Product introduction
South bridge controller. Referred to as the Intel I/O Controller
Hub 2 (ICH2) of the Intel 845 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.
Flash EEPROM. This 2Mb firmware contains the programmable
BIOS program.
PCI-based IEEE 1394 host controller. This PCI-to-1394 host
controller provides the IEEE 1394 link function and is compatible
with 100Mb/s, 200Mb/s, and 400Mb/s serial bus data rates. The
chip also provides PCI bus master bursting and is capable of
transferring a cacheline of data at 132MB/s to support digital
electronic devices.
Audio CODEC. This AC ‘97 audio codec provides stereo analog
I/O on the motherboard and peripheral devices to deliver high
quality audio to PC-connected speakers, headphones, and
microphones. The codec includes analog-to-digital and digital-to-
analog sample rate converters, as power amplifiers and
programmable gain blocks.
PCI slots. These three 32-bit PCI 2.2 expansion slots support bus
master PCI cards like SCSI or LAN cards with 133MB/s maximum
throughput.
LAN controller. This RealTek 8100 PCI LAN controller fully
supports 10BASE-T and 100BASE-TX networking protocols.
AGP slot. This Accelerated Graphics Port (AGP) slot supports 1.5V
AGP4X mode graphics cards for 3D graphical applications.
Microphone jack. This Mic (pink) jack connects a microphone. In
6-channel mode, the function of this jack becomes Bass/Center.
Line In jack. This Line In (light blue) jack connects a tape player or
other audio sources.
Line Out jack. This Line Out (lime) jack connects a headphone or
a speaker.
Serial port. This 9-pin COM1 port is for pointing devices or other
serial devices.
ATX 12V connector. This power connector connects the 4-pin 12V
plug from the ATX 12V power supply.
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