Look up OTG adapter by Jolouis. He sells an inexpensive custom made adapter for Nxx users that when you download his small app. it will automatically switch to USB host mode. OTG adapter also will allow you to connect an ethernet cable for wired connections in hotels and offices that don't have wireless capabilities. OTG adapter also allows you to connect and use wired or wireless mouses(Bluetooth and/or USB models). The OTG adapter is plug and play. Really amazing tool that Jolouis contributed. You need a powered mouse. With OTG adapter it doesn't matter which powered hub you use. If you want to be safe, in the OTG adapter thread many people comment about which powered hub they are using. I've been using OTG adapter for a month and it has preformed without any problems. Hope this helps, Dan