4ch video input,1ch audio input 1 SATA HDD support,USB ... streams, smart phone monitoring 4 channel full D1 DVR H.264 compression 4ch video input,1ch audio input,1 SATA HDD support ... for backup,1 for mouse,1 option) Network InterfaceRJ-45 port(10/100M) Network FunctionTCP/IP,UDP,DHCP,IP Filter,PPPOE,FTP ... X H)Weight2.12KG(without HDD) 4 channel full D1 DVR H.264 compression