Though still a strong fifth-place holder for best-selling tablet brand, Asus dropped nearly 12 market share points from the previous May, from 22.4 to 10.6 points. Asus' popular MeMO Pad line runs on Android Jelly Bean 4.1 and has a Nvidia Tegra Quad-Core processor. Asus' VivoTab line sports tablets running either Windows RT or Windows 8. The VivoTabs can be docked easily into a keyboard for higher production purposes. Of the top 10 best-selling tablet products, Asus did not have a best-seller for the month of May.