I am using SuperPad 3, Model number Android Tab10, Android V2.3 2011-09-01 (001112), Kernel Version 220.127.116.11, Build Number FRF85B The Square App does not show in Market, but i found an APK downloaded and got it to install. But the headphone adapter/toggle will not get recognized. Square says 2.1 android and newer with a 3.55 mm headset adapter should work. Is it possible this headset port is not 3.55mm or is an adapter instead of the proper type? Or is this something that an update could fix? Ideas?