We have yet another test device. Tronsmart CX-919 USB TV stick with android 4.2 and 4.4.2, HDMI output, and optional Air Mouse called iMove (identical to RC11). To power it directly from TV we use Delock USB Y cable, see photos below.
Stock ROM replaced with Finless ROM.
We are a little bit unlucky, because we have a stick with RK3188-T CPU. Also, we (as many others) can not use original Finless 1.6 ROM, because of HDMI flickering. Currently using Android KitKat 4.4.2 BETA.
Also note, that TV stick is recognized as GT-I9300. This is a hack, to allow install more apps in Play Store.