So I originally planned to install three 1TB drives internally to my THD. I wanted to show off to all of you so I went to work preparing the system. This included a replacement power supply, drive support bracket, SATA to SATA internal array controller and purchasing the drives. After some recent research I found that the 2TiB (~2.2TB) is the max overall space possible Thats what I get for trying to brag! Anyways I had to change my plans and scrap some of the items. I did get the system working with a Micro ATX power supply and there is room for three drives side by side. The 14 pin Molex connector the THD uses is key compatible with a 20/24pin ATX Molex. You must change the pinouts or you will short out the power supply! I purchased a 20 pin to 24 pin adapter for 4$ and used it to create an ATX to Tivo adapter The Micro ATX PS is about 2mm too wide to fit next to the motherboard (as shown below). You will most likely relocate the power connection and the power supply is internal so remove the cover and turn it 90 degrees and it fits with room to spare. Since I was no longer able to use three 1TB drives I removed the support bracket I created and made something to attach two drives together. If you are a function over form guy then you can actually use two washers with the screws supplied with the drives to attach two drives side by side so an extra bracket isnt even needed. I put a small spacer between them to promote cooling. A minor modification to a SATA power splitter let it connect to the power connection on the stock power supply. The large zip tie is not needed but I added it as a backup in case I ever dropped the unit. Not pictured is a timer delay circuit that I am adding to the 12 volt line on the B drive. The THD power supply is able to spin up two drives at the same time! (I'm not sure if its good for its longevity though). I covered most of the holes on the right side of the case to force air to flow from the farthest point from the fan. I will be monitoring temperatures over the next few days and will most likely add an additional fan but so far its running at 46 Celsius PS: I hate the idea of external drives.