../ External_NVR_V4.1.66_build200103_Release Notes.pdf 01-Jan-2021 02:28 789339 External_NVR_V4.40.500 build 201020_Release Not..> 01-Jan-2021 02:28 1634111 NVR_X50_BL_ML_STD_V4.1.66_200103.zip 01-Jan-2021 02:28 86783171 NVR_X50_BL_ML_STD_V4.40.506_201218.zip 01-Jan-2021 02:28 110038504