... ways,support net,local,USB record backupSupport mouse,remote control,keypad operationSupport 37 PTZ protocols,with RS-485 access ... USB HDD /USB-RW / Network download Video input8-ch Video output1-ch BNC,1-ch, resolution: 800x600/60Hz, 1024x768/60Hz, 1280x1024/60Hz Audio ... input4-ch RCA Audio output1-ch RCA Alarm input4-ch Alarm output1-ch PTZ control1 RS-485 Interface; Hard ...