... USB 2.0 ports for USB 2.0 disk drives, DVD+RW, DVD+R, DVD-R, card readers, HDD, etc.AlarmInput4 contact or TTL/CMOS ... controlRemote stationsPC, mobile phone, or PDAControl / POS / GPSI/R1 I/R remote controllerRS-2321 D-type female connector for PTZ, POS ... , PTZ control, POS, or GPSSetupLocalOn screen setup via keypad, I/R remote controller, and/or RS-485 keyboard controllerRemoteSetup & upload via ...