Video/Audio input: 4-8 CH Real Time display , same as Live display Compression: H.264 Codec High resolution 720 x 480, 720 x 240, 360 x240 SDK Available RS-232, RS-485 Support Healthy PC as low as 5 % of CPU Load Support OS: Windows 98 & 98SE & ME & 2000 & XP Home/XP Pro embedded