As far as you know mi box have only 8gb internal memory which is not enough to install many apps. I have tried connect my Kingston 32gb usb3.0 to mi box and tried setting it up as internal storage but I got warning about slow speed on my usb.

Since mi box have only usb 2.0 so any suggestion for usb storage. I am thinking about the sandisk cruzer fit which quite small just need to plug and forget. But I worry about its speed.