After running sata connectors and installing my HDD along with the SSD, I attempted to power it on and nothing was powering on. Removed chassis for hard drives and ensured the atx PSU connectors was firmly plugged and it ran while I held down the power button but upon releasing the button, everything powered off. Switched outlets and power supply cable and no luck. Really stings when it is an 8 pin atx header and all my other spare parts lying around are 24 pin so I can't even swap out the PSU for the other one. Btw, it is 180w PSU in case you were wondering🤣 my optiplex 790 has a 260w PSU. This is a joke. Mainly got this to switch to an m.2 boot order but forget it now. Research and consult reviews before buying...