I just bought a used pic 525 and a separate VC+ card. When I opened the unit to instal the Vac + I discovered it had a safe excell-241 card in it. I can't find the legacy link on the makers site for spec download. Is the vac + card a better performer anyway? The few notes I could find seem to tie the safe excell card to the gigabit sx card. Will the gigabit card work in coincert with vac+?