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ASUS PU-DLS/PU-DL motherboard user guide
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Firmware hub. This 4Mb firmware hub (FWH) contains the
programmable BIOS program.
IDE connectors. These dual-channel bus master IDE connectors
support up to four Ultra DMA/100/66, PIO Modes 3 & 4 IDE
devices. Both the primary (blue) and secondary (black) connectors
are slotted to prevent incorrect insertion of the IDE ribbon cable.
Standby power LED. This LED lights up if there is a standby
power on the motherboard, and serves as a reminder to turn off the
system power before plugging or unplugging devices.
SCSI connector. (See description of item 7.)
ASUS ASIC. This chip performs multiple system functions that
include hardware and system voltage monitoring, IRQ routing,
among others.
CPU power fail LED. When lit, this LED (CPULED1) indicates that
the CPUs installed on the motherboard are not identical. This LED
does not light up if there is only one CPU.
LPC super I/O controller. This Low Pin Count (LPC) interface
provides the commonly used Super I/O functionality. The chipset
supports UART compatible serial ports, one parallel port with EPP
and ECP capabilities, a floppy drive, and PS/2 keyboard and
mouse.
Floppy disk connector. This connector accommodates the
provided ribbon cable for the floppy disk drive. One side of the
connector is slotted to prevent incorrect insertion of the floppy disk
cable.
Intel
®
ICH3-S I/O hub. The I/O Controller Hub 3 (ICH3-S) provides
the legacy I/O subsystem and integrates various I/O functions. The
ICH3-S provides Hub Interface 1.5 connection to the MCH, dual-
channel Ultra ATA/100 bus master IDE controller, integrated LAN
controllers, three Universal Host Controller Interface (UHCI) USB
1.1compliant host controllers, I/O APIC, SMBus Specification Rev.
2.0 compliance, Low-Pin Count (LPC) interface, PCI Local Bus
Specification Rev. 2.2 compliance.
ATI Rage-XL VGA controller. This PCI-based VGA controller
supports 8MB display SDRAM for 1280x1024 and true color
resolutions.
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