brian1980

Hello, I installed my own dvr and cameras several years ago. I work in IT, but I'm not particularly versed in surveillance systems and could use some assistance. The DVR I installed is an Everfocus ECOR HD 4F. At the time I only had three cameras connected to it...and everything was working great. The three cameras are: 2- EX760 1 -ED910 I recently needed to add an additional camera. So I went with this one. EZA2580 eX.HD series When I plug the new camera in, it doesn't work. But if I unplug one of the old cameras, it does work. I can get 3 cameras going at once...but not all 4. It doesn't matter which cameras or inputs I use either. Can someone please help me figure out what is going on here? If I need a new DVR, can you recommend which one I get for this camera setup? Thanks all!