Features: 1. supports USB2.0/3.0 input 2. support video output: HDMI signals,Website:http://www.szaikexin.com, support HDMI 1.3 b 3. compatible with USB3.0 4. support functions: 1, according to the main 2 extension, according to 3 images 5.HDMI output resolution: support 480 p / 576 p / 720 p / 1080 p 6. support computer operating system: Windows xp/Vista/Windows 7 (32/64 -)/doing (32/64 -) MAC: MAC OS X 10.6 -- 10.8 operating system 7.support multiple screen function, audio and video synchronization output to HDTV, projector, slide projector equipment, easy to install and operate.