1.Resistance to light interference 2.Vandal proof, dust proof, scrape- ... almost all the monitor or projector in the market.Highlight:1 Support multi-touch,4 points, 16 points, 32 points and ... ,50~60HzOutput:5V,4AInterfaceUSB 2.0(Full speed), compatible with USB 1.1 portHID compiant, plug-and-play compatibleOperating SystemWindows XP, Vista, Windows ...