... . Tiny in size, powerful in function2.4G wireless keyboard with mouse( left button, right button and middle button) & trackball & 3mW ... 5000 hours standby time.Snap-in USB receiverCompatible with PC, Laptop, tablet PC, Google TV, IPTV, Smart TV. HTPC, projector etc. ... for entertainment, conference, lecture, presentation etc. System Requirements:Android PC os, Linux (debian-3.1, redhat-9.0 Ununtu-8 ...