Buttons: 4 (Left/Right-click, Scroll-wheel with middle click, top button)
Top button customizable with Emoji Software
Multi-device: 3 Easy-Switch channels
On/Off Switch with power-saving technology
Video Resolution: 2 displayport 1.4 ports can output up to two 4K@120Hz video images simultaneously, giving you a more realistic and smooth visual experience; backward compatible with 4K@60Hz and 1440P, 1080P, etc.