Not all tablets have "USB Hosting" available. Even when they do you're only likely to get USB Flash drives, Keyboards, or Mice to work because Android doesn't have device drivers for much else. Also, some tablets have TWO usb ports - but only ONE of them can be used with devices.
Well many thanks.
You are the one who opens up a lot of mysteries about this tablet. It is hard to navigate. I have a haipad M701 from Shenzeng with Android 2.3 and multitouch capacitive screen (that does not seem to be capactive at all, since using your fingers does not work). I have a usb keyboard working, but the other usb function I need is to be able to download apps, ebooks .., directly onto the sd isntead of going through a reader. It is said that it can be done if it has a driver.
Where can that kind of driver be found? Thank you.