Update 2 to 4 stars:I have a brand new NVR here now. I have tied in my doorbell camera, a wireless camera, a switch, and a camera on the switch. Instructions for adding cameras and switches are non-existent. I plan to run a cable from the NVR up to the attic, and use the switch to connect the outside cameras. That will reduce the cable runs from the NVR directly. Port 1 on the switch is highlighted, so I ran from port 8 on the NVR to port 1 on the switch. Plug the camera in and there it was. Videos on Youtube use other systems and I question their methods (using the WAN port). The WAN port is designed for plugging into your internet router. So I do that at the NVR only.4 stars because the documentation stinks. IRL, I am a cyber security/network engineer who reads the manuals.Original:I have been beating my head and finally called support for a NVR4116e-hs. I bought it and it appeared to be new. It was not. After a couple days, I figured that I was getting an invalid password response trying to configure it. Clicked the recover using their IP Config Tool. It will email it to 'where'? Oh, it has been used. No factory reset on the HS. Only option, send it back.The NVR was packaged nicely and arrived on time. At first taking it out of the box it way smaller than I was expecting. For some reason I was expecting twice the size as I took it out of the box I was pleasantly surprised to see it was again, much smaller than anticipated. It fit nicely in my rack on the top shelf along with the POE switch I connected it too. Before doing that, I installed the 4TB hard drive I bought that was very easy to install and setup. Nothing to it! I took the case off and slid the drive in and connected the cables and put the cover back on. That was it, very simple and it took me all of ten minutes, if that, to do. Next, I connected the HDMI cable to my Denon receiver and I used the NVR software to find and add my cameras. Having all of my cameras ONVIF compatible didn't hurt and it made it very easy. The image of my cameras seem to be better than using their own included software and I was able to find the hard drive and format it and use it right away. I've read some of the other reviews and obviously there are those who are technically challenged. Make sure you have any wireless cameras in the same network and you'll find them like I did with no problem. Also, the PoE switch ports have no settings. Just connect the cat cable and it should work just fine. I didn't have any issues and the entire process took minutes. I'm very happy with this NVR and I highly recommend it to anybody looking for an NVR to consolidate all of their cameras into one place to look at and maintain.Had some issues with adding a password that I had from one of my first cameras that I had bought. ROYCE at AMCREST technical support was very helpful in getting the camera on line so the NVR could see it. Thanks ROYCE for the great support and being patient with me. She got right down to the root of the problem and solved the issue.This NVR is easy to set up and AMCREST has great support.I was having choppy video and cameras dropping. This only began to happen after adding more cameras. I'm running two 4k, two 720P, and eight 1080p cameras. All are Amcrest. I'd reboot the router and cameras and it would work for a little while but eventually fail. I upgraded my router to a unit which can handle up to 55 connections. We're in a place with tons of electrical equipment and wireless connections for security and that too was having an effect on connections. Once I upgraded the router, turned off all unnecessary wireless units in the building, I've had NO dropped video. Everything is running properly and this new router is covering the building and even reaches outside of the building. I didn't have that before. Video is crystal clear. I'm very pleased with the system. That being said, as I upgrade cameras ( as I hope to do soon) one at a time, I'll update this post to reflect what it will and will not do. Wired is still the best way to go...Great Product was able to connect my cameras at home in same network easy with no issues. I don’t think you can connect this to cameras connected outside your networkHaving tried various other manufacturers of camera surveillance equipment including Q-See, Everfocus, I am quite pleased with the overall performance of the Amcrest products, especially the NVRs which offer many features and functions. USA based with excellent customer tech support along with plenty of training videos online. Recently Carlos B has provided detailed helpful responses to my inquires when questions arise, either through emails, chats, or phone calls. I will continue to recommend the Amcrest product line to all my future customers in my camera security business.It is important to really know "how to" install NVRs. This is not "plug and play" and is not "compatible" with "all" IP cameras as stated. The next issue was on the initiating page the region was stuck in in Uzbekistan. The problem I have with this Tech support it take multiple phone calls to get a useful answer and they all are to eager to "remote log into your computer in order to assist you" They do not ask questions, they just assume and do! AS of this writing, we have packaged this NVR up to return it for refund. So annoyed when descriptions are not truthful. Purchase at your own discretions. For us, it is NOT "compatible with our cameras"If you follow the instructions in the manual you shouldn’t have any issues.No tiren su dinero. Estos sujetos ponen en venta un aparato con PoE pero sin camaras compatibles.