Plugin free browser support

later than Chrome 57
later than Firefox 58
later than Edge 16
later than Safari 11

Firmwares support

IPC later than 19xx.
NVR later than D023.

Models not supported

Low end B series NVR301-08B-P8, NVR301-04B-P4, NVR301-08LB-P8 do not support. 

PC6258SR-X22P, IPC268ER9-DZ do not support.