This mainboard has a Socket-478 processor socket for Intel Pentium 4 type of processors supporting front side bus (FSB) speeds up to 400 MHz. This mainboard incorporates either the VIA VT8753A (P4X266A) or VT8753 (P4X266) Northbridge and VT8233 Southbridge chipsets that support AC 97 audio codec and provide Ultra DMA 33/66/100 function.. P4VXASD2 Manual - PCWare Int'l Owners User Manual. PCWareIntl P4VXASD2 Motherboard manual for this PCWareIntl system directly has accessible P4VXASD2 specification. It includes PCWareIntl configuration, performance, design manual.