Updating usb 2.0 plugins

hi ive recently bought a Super-Dual Box-Pro (ps2 to pc converter) and it works just fine… but i havent updated my usb plugins in forever , and i hear it might be a problem if i wait for too long. i havent noticed any noticable faults in input when i play
(…exept for when ggpo is lagging madly !!)

does anyone know were i can update the usb plugins ?