wireless mini i8 keyboard backlit backlight remote control with lithium battery for android tv box 2.4g touch pad

-7 backlit:1,"fn"+"f2" to open 3 backlit,2, press fn,and swipe the finger left and right on the low part of the touchpad to open 7 backlight. -lithium battery version, it includes 1pc rechargeable lithium battery, only can use slow charger to charge it, can not use fast charge,it can charge by computer usb port how to repair the usb receiver? 1,take usb out,2,press fn+f1 5 seconds,3,connect usb receiver again,keyboard and usb distance not over 1mm. how to adjust the cursor speed: pressing fn+speace to speed up and down. support system:
- windows 2000.xp. vista.windows ce.windows 7 android
- mac os x. android 3.0
- linux (debian-3.1. redhat-9.0 ubuntu-8.10 fedora-7.0 tested).syi