Selling this PC test bench (Computer not included). It's great for testing components or doing benchmarking. The open air design makes it easy to swap in various cards, memory, etc... Supports an ATX motherboard and a vertically mounted 3.5" or 2.5" hard drive, including SSDs. For 3.5" drives, you'll need a right angle power and SATA cable. Includes 9 motherboard screws.
See the last four pictures (grey and blue case) for examples of how you can mount components.