N2A Cards (R) - Transform your Nook HD into a Kit-Kat 4.4.2 Android Tablet (new 2014 version) - (16 GB) Android Kit-Kat 4.4.2 preloaded onto a Sandisk microSD card. Includes OTA Automatic Updates. Dual Boot to either Nook or Android. Enables your Nook HD to be an Android Kit-Kat 4.4.2 tablet. WILL NOT alter the internal memory of the Nook and WILL NOT void any warranty. Download 1000's of apps and games. Additional storage for apps, books, documents, music, photos, videos, anything. While this N2A card is ONLY compatible with the Nook HD, we also offer N2A microSD cards for the Nook Color, Nook Tablet, and Nook HD+. You can search for those listings here on Amazon as well. Free Tech Support 7 Days A Week, Ships Same Day if ordered by Noon Pacific (M-F)