... DVR ModelCLG-7508Eoperating systemEmbedded Linux Operating SystemBackupUSB-HDD,Internet client,USB flashLanguageChinese,English,Japanese,Russian,Portuguese,panish,Italian,French,German, Korean ... Port,1 10/100M RJ45 portCommunication Port1 RS485 port, 2 USB connector, 1 SATA interfaceAlarm Input4chsAlarm Output1chsPTZRS485Support HDDOne SATAWorking Temperature0~+50Working ...