HighSpeed PC Top Deck Tech Station - Large (EATX) /Black A good home for your hardware: Based on ATX form factor motherboard specifications providing total accommodation of all motherboards including mITX, mATX, ATX, and eATX (also some SSI EEB) motherboards. The motherboard is perfectly secure on the upper shelf with a high friction rubberized standoff system that supports the motherboard 1/4" off the bench surface (accommodates CPU cooler back plates and increases air circulation). Hard Drive Storage/Cooling Rail System: Slide the HDD's in/out on smooth non-conductive acrylic rails. Two standard 3.5" hard drives can be easily inserted, protected and cooled by rails suspended under the top shelf. One end of the HDD Rails open to catch air from the 120mm cooling fan. The Large model can support an optional second set of HDD Rails to hold a total of four hard drives, and SSD Drive Rails are also available. No loose Add-in cards! The AGP/PCI support brace solves the problem of loose motherboard add-in cards, loose cards can damage circuitry. The brace offers universal support for all add-in cards - blocking no cables or connections, and has some lateral flexibility to make adding/removing cards easy. Nylon thumb screws twist into the top of the brace and are positioned at ATX form factor spec locations so seven add-in cards can be locked in place. Bottom shelf, load it up: The lower shelf is for stacking the drives and power supply. Includes a neoprene mat to make the entire shelf a non-slip and non-conductive work surface. There is plenty of real estate here to hold optical, extra hard disks, even liquid cooling systems. Nylon guide posts position the motherboard perfectly on the Tech Station. Add-in cards are securely locked in place with thumbscrews so the motherboard is safe yet available for hands-on work and is easily removed. A 120mm 12v fan positioned on the left side forcing air over heat sensitive components on the motherboard and the Hard Disk Drive(s) mounted under the top shelf.