ASUS P4B533-M motherboard user guide
1-7
ASUS ASIC. This chip performs multiple system functions that
include hardware and system voltage monitoring.
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.
AGP warning LED. Serving as a smart burn-out protection for the
motherboard, this red LED lights up if you plug in any 3.3V AGP
card into the AGP slot. When this LED is lit, there is no way you
can turn on the system power even if you press the power button.
Standby power LED. This green LED lights up if there is a standby
power on the motherboard. The LED acts as a reminder to turn off
the system power before plugging or unplugging devices.
Audio CODEC. The C-Media CMI9738 is an AC’97 2.1 compliant
audio CODEC designed for PC multimedia systems.
(on audio models only)
PCI slots. These three 32-bit PCI 2.2 expansion slots support bus
master PCI cards with 133MB/s maximum throughput.
1394 controller. The TSB43AB21 is an integrated 1394a-2000
controller that is fully compliant with 1394 Open Host Controller
Interface (OHCI) specification 1.1. This device allows data transfers
between the 33MHz PCI bus and the 1394 bus at 100Mbps,
200Mbps, and 400Mbps through a 1394 port. It also provides PCI
bus master bursting, and is capable of transferring a cacheline data
at 132MB/s to support digital electronic devices. The TSB43AB21 is
fully interoperable with FireWire and i.LINK implementations of
IEEE Std 1394.
(on 1394 models only)
AGP slot. This Accelerated Graphics Port (AGP) slot supports 1.5V
AGP4X mode graphics cards for 3D graphical applications.
LAN PHY. This Intel 82562ET LAN PHY works with the integrated
MAC in the South Bridge (ICH4) to fully support 10BASE-T/
100BASE-TX Ethernet networking.
(on LAN models only)
PS/2 mouse port. This green 6-pin connector is for a PS/2 mouse.
11
12
13
14
15
16
17
18
19
20