Pessoal, boa tarde! Não sei se alguém já postou, mas ai vai a dica, no Vaful.com estão vendendo Tablet PC, comprei o Tablet PC Prototype Shield, muito bom o material da placa!
http://www.vaful.com/teclast-a12-101-inch-10-points-capacitive-touch-screen-android-23-tablet-pc-all-winner-a10-15ghz-2160p-hdmi-8gb-p-100164.html
http://www.vaful.com/cube-u30gt-dual-core-101-inch-ips-10-points-touch-screen-android-40-tablet-pc-rk3066-15ghz-1gb-ddr3-ram-16gb-p-100162.html
http://www.vaful.com/jxd-s7100-android-22-7-inch-gaming-tablet-pc-cortex-a9-game-console-3g-p-100144.html
http://www.vaful.com/gemei-g3-7-inch-ips-capacitive-touch-screen-android-40-tablet-pc-front-camera-wifi-3g-p-100110.html