Remove the cover of the NVR case (203706) = 3 screws Rotate the fan through 90 degrees making sure the power cable is on the bottom – nearest where the Motherboard will go.

Remove the Hard drive bracket near the fan.

Remove extra motherboard mounting post from the casing. This is a bit tricky and will need a pair of grips to rotate the pin out of the case. Make sure there is no lose metal left behind.