SilverStoneTechnology 2U Dual 5.25" Drive Bay ATX rackmount Industrial Storage Server Chassis with USB 3.1 Gen1 Interface, SST-RM23-502

2U cases are designed for a limited foot print and you should only buy this case understanding that:1. You will be limited to a CPU cooler height of <70mm.2. There are limits to the size of Power Supply you can use. Most rack cases require you to buy a special form factor of PSU. This one can fit a standard ATX PSU under 160mm in length, so an 850W will fit no problem.3. No rack case comes with rails - it's always something you need to buy extra, with much more expensive cases (not saying this is good, but it is the reality).4. Only low profile expansion cards are supported.The user who left this review would have been better off buying a 4U case to convert their desktop over to rack mount.That being said, what this case does, it's very good at. You can fit an ATX mobo/PSU inside, which is hard to find for a home lab. It's got excellent airflow (front to back) for cooling. Convertable 5.25" bays for more drive storage. It's great bang for your buck. Comparable cases from Supermicro are 2x-3x the price.

This is a great case, it does not require an SFX power supply and it supports a full size ATX motherboard. That's the punchline, folks.If you want a 2U case you're either dealing with SFX power supplies or ITX / mATX boards. Not with this case. You can use nearly any PSU you want. And considering you could never use 1300w of components in this case, this is a non-issue. 850W Seasonic? Easy.They put the power supply in the front of the case, which yeah, is arguably weird. But if it was in the rear you could not have an ATX board. Or they could have tried to smush an SFX in there or used some proprietary PSU but that would be awful. This is the best of both worlds. And yes this does mean there is an auxiliary power cable going from the rear to the front, and it requires a somewhat sharp bend to plug into the PSU but when you properly disassemble the case and carefully bend the cable its no big deal at all.And yeah, you gotta buy a 2U cooler. Its a 2U case afterall... While there are some low profile coolers that would work, you don't really want the airflow going that direction in a 2U case.I even created a custom magnetic dust filter for the front which makes it even better.Great case.

I have purchased three of these cases and it's a good design overall. The only reason I don't give it 5 stars are the holes cut on the top of the case for venting the power supply don't seem to line up with the ATX power supplies I keep buying. Not enough to worry me, or make the units over heat, just enough to make you scratch your head and wish they were 1" shifted.

Ever since I installed this, all my buddies want to get their hand on one of these too!

You already know what you are looking at, so I will get straight to the problems.1. The interior power cord extension (plugs into your ATX PSU and extends the receptacle to the back) is poor quality. It has no no safety markings (UL/ETL) and unbelievably, would not fit in my power supply (Seasonic Prime GX 1300W). The plug tolerances on the cheap *hardwired* (not replaceable) extension cord inside the case are subpar. This means it will fit in some PSUs and others will require you to sand down the plug.2. The bend on that cheap internal extension makes me uncomfortable. You cannot relieve the strain due to how the PSU mounts.3. Rails should be included at this price. They charge an additional $70 for rails and they are often out of stock.4. If your mobo uses angled connectors for USB3 or SATA, you are going to have a tough time with the clearance between the side of the board and the mid frame.5. You should also consider the need for a 2U CPU cooler, also sold separately for $40.All in all, I would research more options when it comes time to buy another.