Prototype J-Hack Pure Mk2 APU case

[Snerual]

So, my case finally arrived and I am wondering how to mount the PSU cable to the case? My Streacom Nano 160 PSU did not come with a bracket or anything.

 

[BaK]

So, my case finally arrived and I am wondering how to mount the PSU cable to the case? My Streacom Nano 160 PSU did not come with a bracket or anything.

The hole here is too big for your Streacom power socket.
With the right sized hole you have to unscrew the flat hex nut, pass the power socket through the panel from the inside, and screw the hex nut back to attach everything to the case.
I think all you need to find is two washers a little bigger than the hole, one for the inside and one for the outside, and then secure everything with the flat hex nut.