The replacement PSU for the 1290B Evercase will be slightly different from the original. It will be smaller and have different fan placement. It will also come with a bracket that will need to be attached to the end of it so it will be able to fit into this case. Below is a picture of what the replacement PSU with attached bracket should look like.
Next you will want to place it into the case like so.
Then pressing down on the PSU slide it towards the back of the case until the bracket is flush against it.
The last step is replacing the three screws. The final result should look like this.
