Hardware.Info posted Corsair Obsidian 350D review: 900D Mini
A quote from the article:
Earlier this year, Corsair released their latest flagship chassis, the Obsidian 900D. A bit later a mini version came out, the 350D. Almost like the mini versions from smartphone brands such as Samsung and HTC, there are many similarities with the bigger sibling, but the features are less extensive and less advanced. It's smaller, more affordable and it will only fit micro-ATX motherboards.Corsair Obsidian 350D review: 900D Mini @ Hardware.Info
Compared to the Corsair 900D, one of the largest chassis we've tested, the 350D has less internal space and less room for liquid cooling. There are also fewer frontal connectors and internal fan connectors.