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Thank you for choosing the L4S8A2 mainboard. The L4S8A2 mainboard is a
high–performance, enhanced function mainboard that supports Socket 478
Pentium 4 processors with system speeds up to 533MHz for high-end
business or personal desktop markets.
The mainboard incorporates the SiS648 Northbridge and SiS963 Southbridge
chipsets. The SiS648 Northbridge chipset provides a 12-level In-Order-Queue
to support maximum outstanding transactions on host up to 12. The memory
controller offers high-bandwidth up to 2.7GB/s under DDR333 in order to
sustain the bandwidth demand from the host processor, as well as the multi
I/O masters and AGP masters. While the SiS963 Southbridge integrates the
Universal Serial Bus 2.0 Host Controllers, 1394a and Audio Controller with AC
97 interface.
The L4S8A2 is designed to give customers an advanced, multimedia solution
at a very low cost. It is equipped with advanced full set of I/O ports, such as
dual channel IDE interfaces, a floppy controller, two high-speed serial port, an
EPP/ECP capable bi-directional parallel port connector, four USB (Universal
Serial Bus) connector, a PS/2 keyboard and mouse connectors. One AGP slot,
five PCI local bus slots and one communication and networking riser (CNR -
) slot provide expandability for add-on peripheral cards.
optional
Note: SDRAM provides 800 MBps or 1 GBps data transfer depending on whether
the bus is 100 MHz or 133 MHz. Double Data Rate SDRAM (DDR SDRAM)
doubles the rate to 1.6 GBps or 2.7 GBps by transferring data on both the
rising and falling edges of the clock. DDR SDRAM uses additional power and
ground lines and requires 184-pin DIMM modules rather than the 168-pin
DIMMs used by SDRAM.
Introducing the Mainboard
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