Home-type video security surveillance 4ch DVR 1.H.264 DVR compression ... D1 playback 3.VGA+Alarm+PTZ+network 4.USB Home-type video security surveillance 4ch DVR1.H.264 main profile compression2 ... Mouse Control :Yes USB Port : USB2.0x2 Language Support :English, French, German, Portuguese, Russian, Spanish, Thai, Chinese, Traditional Chinese, Turkish, optionalVGA ...