... H.264 embedded dvr 2 Matrix,mouse,Alarm,PTZ,Network function 3 Support 3 USB2.0 4 cheap price,warranty 3 years digital video recorder /h.264 embedded ... Support External alarm record, motion and alarm record, manual record, shelter alarm record.PTZ:Support multiple PTZ protocol. Support Keyboard ... 1RS422 port, 3 USB2.0 portBackupRemovable HDD, USB DVD/CD writer, NetworkPower supplyAC100-240V 50/60HzUnit ...