The One comes with three precut holes, which for this mid-tower case, seem to cover enough space for routing wires correctly. This should be helpful in keeping a nice clean installation once everything is done. However, we will withhold final judgement until we have the system completely installed.
After everything is installed, you can see the One does a decent job with managing wires. It does have a little “bird nest” at the bottom, but with some zip ties and a little extra time spent with cable management, you could probably reduce it quite a bit. You can also use modular PSU’s to help with the clutter, as this is a big help with smaller cases like this mid-tower. If you are savvy enough, you can build the system with minimal blockage of air flow with the modular PSU’s.
The PSU installation area comes with a sliding dust filter for easy cleaning when needed.
The front bay covers have two kinds of dust filters. The top half has a foamy mesh solution to help black out the dust, and the bottom has a more simple mesh inlay to keep out dust. The bottom will do an alright job of blacking dust, but not a great job.