3
AC 97 Audio
Codec
The AC 97 Audio codec is compliant with the AC
97 2.2 specification, and supports 18-bit ADC
(Analog Digital Converter) and DAC (Digital Ana-
log Converter) resolution as well as 18-bit stereo
full-duplex codec with independent and variable
sampling rates.
Expansion
Options
The mainboard comes with the following expan-
sion options:
•
Six 32-bit PCI slots
•
One 4xAGP slot
•
One Communications Network Riser (CNR)
slot
•
Two IDE channels and a floppy disk drive in-
terface
•
One Onboard LAN chip and LAN port on top
of the USB port (optional)
The P4IBAS2 supports Ultra DMA bus mastering
with transfer rates of 33/66/100 MB/sec.
Integrated I/O
The mainboard has a full set of I/O ports and con-
nectors:
•
Two PS/2 ports for mouse and keyboard
•
Two serial ports
•
One parallel port
•
One MIDI/game port
•
Two USB ports
•
One LAN port (optional)
•
Audio jacks for microphone, line-in and line-out
BIOS
Firmware
This mainboard uses Award BIOS that enables
users to configure many system features including
the following:
•
Power management
•
Wake-up alarms
•
CPU parameters and memory timing
•
CPU and memory timing
The firmware can also be used to set parameters
for different processor clock speeds.