Previous announcements included Gigabyte's October 2009 list of seven P55 chipset USB 3.0 motherboards, and an ASUS motherboard that was cancelled before production.
Varasemad teadaanded sisaldavad Gigabyte 2009. aasta oktoobri nimekirja seitsmest P55 kiibistikuga USB 3.0 toega emaplaatidest, ning ASUS emaplaat, mis tühistati enne tootmist.