|That one on Amazon isn't designed to be used horizontally, it has to be stood vertically as shown.|
It's got cooling vents on both sides but no stand-offs, so if you laid it flat (ie horizontal) the cooling vents would be blocked by the floor or desk it's sitting on. In that configuration overheating is guaranteed unless you screw or stick your own stand-offs in each of the four corners on the side that's going to be against the floor, still risky if the clearance isn't enough.
I also used to prefer horizontal cases to vertical ones, mainly because my first PC was a horizontal one (factory-built 20 years ago). However, since I started building & upgrading computers I quickly realised how much easier tower cases are to work on, easier drive-bays access especially, plus you can fit more drives in a tower case. There's just more workspace in them compared to horizontal type.
Not only that, horizontal cases are now getting as rare as hens teeth.
message edited by phil22