The all-aluminum alloy shell enhances the resistance to electromagnetic interference while enhancing heat dissipation,it not only effectively extends the service life,but also enhances the strength of the body,so that you can easily carry it around without worrying about damaging it.Extend the mouse,keyboard for iPhone or iPad to improve typing speed working efficiency.Connection music devices that is the best choice of electronic musical instrument players.For USB headset,USB sound card,wireless keyboards/mouse,sdigital cameras.