... 11 b/g/nUSB ports: USB 2.0 host x 2 at rear,USB 2.0 host x 2 at leftStorage card: SD/SDHC ... ~60Hz built-in power module Android: Android version: 2.3 UI: Obstacle-free UIPreinstalled apps: Chinese version: ANZI market, Tengxun video, PPS video ... , SharePNP, BubbleUPnP, firefox browser, Opera brower, Sina twiter,etc.Oversea version: Google Market / YouTube / TED Air / Twister / FaceBook / Skype / Google ...