If you’re still having problems though, there’s now a cheap and compact solution in the form of the iXP1-500 iPad adapter. If you’re still getting the “Not Charging” message in your iPad’s status bar when you connect it to your computer via USB and don’t want to go to the extra hassle of connecting to a wall outlet, then the iXP1-500 adapter from Xmultiple Technologies Inc. could solve your problems. The adapter features a male USB type A connector for attaching to your computer’s USB 2.0 port and a female USB Type A connector for attaching your existing Apple charge/sync cable’s male USB Type A connector. Once connected Xmultiple says your iPad will charge over USB – guaranteed. The iXP1-5000 retails for US$4.95. It's small, it's cheap and it fills a need.