So just for fun I plugged my BT USB mouse in with the adapter and it worked fine.
So then I used my other BT mouse without USB and was able to pair it to the phone and it also works fine.
Pretty sure you could also do a wireless keyboard @ this time don't have one.
Now do I need a mouse connected to my N7 not really and I can also do quick connect to my Samsung TV projects my phone on to the TV full screen then sit back and control with the mouse.
Just one of the many benefits from Android/Samsung
So then I used my other BT mouse without USB and was able to pair it to the phone and it also works fine.
Pretty sure you could also do a wireless keyboard @ this time don't have one.
Now do I need a mouse connected to my N7 not really and I can also do quick connect to my Samsung TV projects my phone on to the TV full screen then sit back and control with the mouse.
Just one of the many benefits from Android/Samsung