I'll start off with saying that this is not really a product necessarily aimed at people who hate computers or aren't enthusiasts/technical, but then I don't believe this is aimed at the average home user - most are happy to use their router or software firewalls but those of us who aren't, have small businesses or whatever, might want something beyond those.Essentially a NUC but a touch different having 4 LAN ports, all of which are 2.5GB ports is very nice, seeing 1GB devices is fine but I live in the hope we're beyond that now and steering towards 5 and 10GB. The box has a security/tamper proof seal - might not be something you may care for but it does mean that for ultimately a security product, you'd know if it has been tampered with when purchased. Inside the box is the PC itself, screws, cables, VESA mount and power brick etc but somewhat bizarrely, no paperwork. Nothing to confirm the box contents, no quick-start guide, nada. While I knew it had an open source Firewall installed, I had no indications what it was.Build wise, the box is solid and hefty. Sure it's small and compact but it's solid metal (aluminium) and the top of the case is essentially a large heat sink to dissipate heat. It got a little warm, but nothing major at all. If there's any criticism about the box and this is all subjective of course, the HDMI/DP ports being on the front aren't ideally situated. Side would be neater, rear better but no space really, but the front makes it a tad ugly (sorry!). Oh and the power switch LED on the front is incredibly bright (so depending on where you put it, you might want to cover it).Powering the box up and using a portable screen (as its handy) there's some configuration screens presented but nothing major (although they might just autoload on defaults initially, it's handy to see it boot if nothing else to confirm the IP address for the GUI, unless you run a port scanner). Once you know where the box is setup, you can type that IP on your PC/Mac/Whatever and gain access to the setup screen. This is where you also find out the Firewall software being pfSense CE (actually the latest version at time of writing) so before you go to the GUI, you can visit the online documentation via their website as you might want it to hand when you con figure the box/software.I'm not going to go into the software beyond this - you can install your own should you wish to or use that, either way, we're just talking about the hardware itself. Removing the screws on the bottom allow you access to the internals where there's a SATA port, the NVME and RAM, both of which are easily upgradeable and the WIFI module. It's all very easy to fix/upgrade should you wish to. Stability of the box seems fine - its been on several hours and as said, a bit warm, but stable (it is a low power CPU after all and the heatsink top helps heat wise).With it being well built, I don't see any issues with this running 24/7 - the software is essentially entirely your choice but a decent one as such being bundled. It's a nice hardware platform with faster than typical LAN ports for a reasonable price tag.