Pros: First off, I want to say that N4 is a great dash cam option. The video is clear in both daylight and at night.

Cons: However, it's untrue to call this a 4k capable camera, even if ONLY using the front cam option. The front camera sensor is only a 5MP sensor. That is not enough to capture a 3840x2160 image as an 8MP sensor is required for that. So 2592x1520 is its true maximum resolution. Anything else is artificial upscaling.

Overall Review: Vantru needs to ensure the N4 replacement or next gen contains an 8MP sensor if they want to truly claim 4k clarity.

Pros: Slides smoothly, and fits rosewill cases well (although Rosewill needs to lower the rail mounting holes on their cases just a little and not dead center).

Cons: With Rosewill 2U and 4U cases and these rails, servers sit ~1/3 U too high. But that is a case issue and not rail issue. The square washers they provide are wider than they need to be and extend beyond the rack post inside edge, blocking the rails from sliding out. Had to grind one side of the square washers down to not interfere with slides.

Overall Review: Worth the money, but be prepared to need to find replacement washers or grind the default ones down to fit.