Key FeaturesThis i8 remote keyboard supports tri-color (RED, GREEN and BLUE) backlight when in use (Buttons: Fn + F2), which is cool and compatible with most Android TV Boxes on the market. In rare cases, some branded Android tv box devices are perhaps incompatible. Also, smart tv is not compatible.Users can unpack the back cover of the i8, making the USB transmitter accessory plug into the USB interface of our TV box device, and then we can use the i8 to control the TV box device (via 2.4 ghz). It is a handheld keyboard with multimedia remote control and touchpad function. With the DPI adjustable functions of the touch panel, it can better adapt to different sizes of screens. Small, light, smart and convenient to operate, it is a wonderful control kit.How To Use: Unpack the backcover, install one pair of AAA batteries (batteries NOT included inside). We will see that the USB transmitter acc also stuck inside. Insert USB transmitter, which is for communication, to the USB port of tv box device at use. POWER button is on the top of i8. Press POWER button to enable ON. Now, we use i8 to control the tv box device.Actually i8 keyboard supports tri-color backlit mode, which is great. We as users can press the Fn button and F2 button to switch the screen to color when in use.