I own a Shuttle MV42N with the Via P4M266 Chipset, on the motherboard, it has a jumper setting for CPU Frequency - 100mhz or 133mhz, would this let me use a P4 with 533mhz FSB? Both VIA's and Shuttle's specs pages say it only supports 400mhz FSB, why include the jumpers? The jumpers seem to work - i set them to 533mhz on My 1.7 Celeron, the computer started but nothing showed up on the screen meaning the jumpers are active.