Have a gently used M4-ATX power supply with case for sale. About a year old but only used for 6 months. Power supply works great, just want some more juice so going with the 320W opus. Comes with the enclosure from mini-box and I even have a custom cable for the usb, amp turn on, and power on/off (check pictures). Has a few holes in the case itself from how I mounted it and a little bit of solder on the 5v/ground rails from wiring us a USB hub.
Asking $65 shipped to the lower 48 states for what you see. If you have any questions feel free to ask.