... play, Next file, Previous file, Next camera, Previous camera, Full screen, Repeat, Shuffle, Backup selection, Digital zoomBackup ModeFlash drive/ USB HDD/ USB CD ... PPPOE, DDNS, FTP, Alarm Server, IP Search(Support Dahua IP camera, DVR, NVS etc)Max Remote Users20 Users simultaneouslyRemote OperationMonitor, PTZ control ... 375mm×285mm×50mm(W×D×H)Weight3.0KG(without HDD) digital video recorder camera dvr