For the first model with the USB, they used a more expensive mediatek 1389 chipset, then they realized that the retail price was way way lower than what it should be with that chipset and USB capabilities, thus they withdrew all units with the USB and released a cheaper (cost wise) unit using the same model number. The new units don't have the mediatek chipset anymore, nor the USB connection. Mahirap na maghanap ngayon. Yung akin was bought 2 months ago, last unit na, may sablay pa sa pindutan sa harap, pinabayaan ko na because gusto ko yung USB capabilities.