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ASUS P4BGL-VM motherboard user guide
1-7
Flash EEPROM. This 2Mb firmware contains the programmable
BIOS program.
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.
ASUS ASIC. This chip performs several system functions that
include hardware and system voltage monitoring.
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 a 4-channel audio
CODEC that is fully compliant with AC ‘97 2.2 specifications.
(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.
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.
Parallel port. This 25-pin port connects a parallel printer, a
scanner, or other devices.
RJ-45 port. This port allows connection to a Local Area Network
(LAN) through a network hub.
(on LAN models only)
Line In jack. This Line In (light blue) jack connects a tape player or
other audio sources.
(on audio models only)
Line Out jack. This Line Out (lime) jack connects a headphone or
a speaker.
(on audio models only)
Microphone jack. This Mic (pink) jack connects a microphone.
(on audio models only)
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