iStarUSA S21-15F2 Black Aluminum / Steel Tower Case Compact Stylish Mini-ITX Enclosure 150W Flex ATX

Pros: Nice little case. Don't need an external power supply. Most cases this size need one.

Cons: Power supply is very loud! I've bought two of these. Both had the same issue. Loud enough to make it almost unusable.

Other Thoughts: If the power supplies were quieter, I would give this 5 stars.

Pros: This case is great for building a very small system - it takes a mini-ITX MB and either two 2.5" or one 3.5" drive. If you are concerned about air-flow the case has fan mounts for a front-mounted fan (size unknown) and/or side-mounted fan (again, size unknown). The side-mounted fan will intrude over the add-in card slot.

Cons: This case was made for mini-ITX MBs, but there is no included riser to use the add-in slot. If you check the manufacturer's product page, they offer a riser, but I didn't have a need for one.

The drives mount on the top of the case, on a mounting plate. If you install two 2.5" drives you may obscure one of the four mounting plate screws. I only installed one 2.5" drive, but had to move it when one of the four screws was blocked. It probably would have been fine to only use three screws to hold the mounting plate, but since I was only installing one drive I just moved it.

The MB I used had a fairly low-profile CPU cooling solution (fan/heatsink), but a more conventional cooler (like, say, an Intel stock CPU cooler) would interfere with a 3.5" drive.

Other Thoughts: I coupled this with a Biostar A68I-350 MB to create a test Windows 8 box which didn't require any add-in cards or optical drive, so the "cons" didn't impact me. I wish the cables on the included power supply were a bit shorter, but there is sufficient room to tuck away unneeded cables.