This computer is an interesting one, it's the first of these metal, industrial computers that I have ever reviewed or used. There is no fan, it is passively cooled which is crazy for this level of a processor. We're talking about an eighth generation Core i7 with four cores. This is only possible because the entire enclosure is basically a heatsink, so the exterior is part of the cooling system. I'm not really sure why there is no fan, I'm guessing it's because airflow would cause problems in certain types of environments where there was sawdust or other debris that could get inside and damage the fan and other components. This is just speculation, but the metal enclosure offers significant durability over more conventional materials like plastic.I opened up the computer to take a peak inside and look at the what brands they were using for the components. It's all good stuff inside, the wireless card is Intel, the RAM is from Samsung, and the SSD is Western Digital. The main board is actually pretty sizable for what is essentially still a mini-PC. There are two SO-DIMM slots, so you can upgrade to 32GB if you buy another 16GB stick like the one that is installed. Same goes for the 512GB SATA SSD, I didn't really see a specific place to mount a 2.5" drive, but that may be possible as there is a lot of room inside.Let's talk about some of the downsides, there is no support for WiFi 5 (802.11AC), I don't know why this is but it seems like a big oversight for an otherwise well equipped computer. Because of the solid metal body, you have to install antennas on the back of the device. Wifi and Bluetooth cannot pass through solid metal, I even had trouble with a 2.4GHz wireless mouse I was using. I had to plug the USB receiver into the front USB port, because it wouldn't work when plugged in on the back ports.The port selection is kind of strange, but I'm assuming it's for special machines that this might be connected to in an industrial/factory type setting. There are 7x USB A ports, with 3x 2.0 on the front and 4x 3.0 on the back of the device. There is also VGA and HDMI, one of each on the back. 1x Gigabit Ethernet, 1x headphone and 1x microphone jack. Then there are two serial ports, which is older and you don't really see those a lot anymore. Other than that, there is just the two places you screw on the antennas and the power adapter barrel plug. This comes with a 12 Volt, 5 Amp power supply.This computer performed well in my testing and I never felt like I was using a computer that was missing a fan. Except if you touch the top of the case and feel how hot it can get, it's not like you'll get burned or anything but it can get quite warm. The only thing about this computer than seems like a negative is the lack of newer WiFi technology. If you are using a wired LAN connection, then you won't even miss it, but you shouldn't have to only be able to use Ethernet to get fast speeds. But you could also install your own wireless card with a newer one, since the Core i7 does support Wifi 5 but not 6.