We needed newer, higher-spec computers, but we work around dogs, and fur and computer fans don't mix particularly well. It's difficult finding better-specced, passively-cooled (fanless) PCs from more established PC brands, so we took a gamble and purchased two of these (Core i5, 16 GB RAM, 250 GB SSD). While we're happy with the purchase overall, there are some things that potential buyers should be aware of.First off, these are ready to use right out of the box. Just plug it in and turn it on, and you'll be looking at the Windows 10 desktop within maybe 10-15 seconds. These come pre-configured with a 'Kingdel' user account, so there's no need to go through Windows setup. Now, some people may be totally okay with that, but I'm going to provide some suggestions for anyone who's interested.Whether you intend to work with the pre-installed Windows 10 Pro installation or decide to do a clean install, please do yourself a favor and boot into the pre-installed Windows 10 Pro installation at least once to ensure that it's properly registered. Just go to the Start menu, then Update & Security, then Activation. If it mentions that Windows is activated with a digital license, then you're good to go. We didn't have any issues with activation, but the product description suggests checking the activation status, so I suggest doing so.So, why wouldn't you want to just continue using this particular installation of Windows 10 Pro? For starters, given how far behind this particular installation of Windows 10 will likely be on updates, if you want the latest and greatest build of Windows 10, then it'll be much quicker for you to do a clean installation of Windows 10 Pro using Microsoft's Windows 10 Media Creation Tool (which is available from Microsoft's own Web site and can be located by searching for 'Windows 10 Media Creation Tool' on Google), which allows you to create installation media for the latest build of Windows 10.Why else do I suggest that you do a clean installation of Windows 10? Well, if you dig around in the Start menu briefly, then you'll notice that Microsoft Office 2007 is installed. Now, while I'm sure there's a small chance that the company selling these computers has a license to provide Microsoft Office 2007 on PCs in perpetuity, I'm not that optimistic, and I don't like the idea of having software that's more than a decade old on my new PC, anyway. Plus, if you already subscribe to Microsoft Office 365, then you have no reason to leave an outdated version of Microsoft Office (or its remnants if you uninstall it) hanging out on your brand new computer. If you don't subscribe to Microsoft Office 365, then it's pretty inexpensive, anyway.Really, just do yourself a favor and do a clean installation of Windows 10 if you happen to buy one (or multiple) of these. I have no complaints about them from a hardware perspective (other than the fact that the USB ports are upside-down), but I'm not a huge fan of these computers shipping with such outdated builds of Windows 10 on them (especially given how long it takes for Microsoft to push out updates), especially with the inclusion of Microsoft Office 2007. If you're comfortable with doing a clean installation (or know someone who can do it for you), then I do highly recommended picking up one of these computers, especially if you need one that's well-specced and needs to be used in a dirty (or furry) environment.