Compatible operating system: Microsoft Windows XPCompatible operating system: Microsoft Windows 7Video output: 1CH 4K HDMI 3840 x 2160Video output: VGA 1ch 1280x1024 60hzIP mode: static IP addressPlug Type:US Plug,it applies to Canada, India,Mexico, Thailand, the United States, the Philippines,Taiwan and so on./Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so onVideo standard: NTSCVideo standard: PALHard disk size: 3.5 inchesNetwork protocol: TCP/IPNetwork interface: RJ45 10 / 100mBackup type: hard driveVideo input interface: HDMICompatible mobile system: Iphone OSCompatible mobile system: AndroidVideo resolution: 4MPCompression format: 1.3MPCompression format: h.265Audio compression format: g711aHard drive interface type: SATAMaterial:plasticcolour:Black Package Contents:1 x NVR1 X USB Mouse1 x CD SOFTWARE1 X Power Adapter for NVROnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.