I'm disappointed with this. After looking at several similar systems for a long time, I settled on this one and bought it without a hard drive as I have several of them. Along the way, he decided to buy a WD 4TB Surveillance Disk. I could NOT get this system to format this drive or any other green 4TB drive I had on hand, although they format and work fine on a PC. Format them in the system stopped at 90% and then said the impossibility of formatting. Also, one camera did not turn on the IR light when tested. I contacted the seller, they sent me another camera (the replacement worked fine) and their solution to the hard drive problem was to send me another power supply (really?). Of course, this did not fix the situation, everything was fine with the old PSU. Tested again with a new power supply, same result. For the sake of interest, I threw in an old 1TB hard drive I had laying around and it completed the formatting on that one, but refused to capture video, just a static image from the moment it was powered on. As I sit here on my desk trying to get it to work (just under 2 weeks) the silver cosmetic strip on the front has come loose from the DVR unit casing. Unfortunately I have to send these back. In my experience, if you have problems with something, once you get it, you will always have problems with it. I had high hopes for this but I'm leaving very disappointed. I will say the pics from the cameras looked really good and the IR was great in the dark so I can give the cameras high marks (I think considering 1 out of 16 IR lights didn't work) but it's useless if i can't write them down.
TP-LINK Tapo C310 security camera white
30 Review
Blink XT/XT2 Camera Wall Mount Bracket - 360Β° Adjustable for Indoor/Outdoor Use - 3 Pack
11 Review
Versatile Adjustable Wall Mount with Enhanced Security for Both Indoor and Outdoor Use
11 Review
WiFi Hidden Spy Camera with Live Feed & Video Recording - Remote Access Mini Nanny Cam | Spy Camera Wireless Hidden for Home Surveillance
11 Review