Intel IMB200VGE - Manual (Page 62)

IMB200 LGA775 ATX MB User Manual
Award BIOS Utility 56
7.6.5 Onboard UART 3/4 IRQ
Use these BIOS setting could help to set up the IRQ for
Onboard UART
7.6.6 Spread Spectrum
Spread spectrum is a form of wireless communications in
which the frequency of the transmitted signal is deliberately
varied. These results in a much greater
bandwidth than the
signal would have if its frequency were not varied