Confused about Mac browsers and Hivision nvr and cameras

This has probably been done to death, but I"m still confused.

I have a DS-7604NI-K1/4P(B) now running on 4.30.000 and a DS-2CD2135FWDF-I running 5.6.5
Both are the latest firmwares.

I thought with these later firmwares, particularly level 4, they had sorted the problem with iMac and browsers. ie no pluggins to view live or recorded data.

I have just loaded 4.30.000 on my nvr, but any browser I use on my iMac asks me to download a plugin. The problem is it is always an .exe file which...

Confused about Mac browsers and Hivision nvr and cameras