I had the soundcard out of the system today whilst I was taking some measurements, so thought I would show you how the plexi cover was added to it.
To get started here is the original soundcard that came with the motherboard. Notice the small screws that hold the actual PCB to the backplate have been removed.
This is to allow the backplate to be removed form the card so the holes can be used to mount the plexi, like this.
Now to cut a sheet of the 3mm Plexi in the same shape as the PCB, making sure it will cover the PCB itself and also the screw holes for the backing plate. 3mm diameter holes also need to be drilled through the plexi to allow mounting through the backplate. I will be using M3 bolts, nuts and washers.
Then simply place a washer on each of the bolts and place through the plexi. I then tightened a nut on the bolt to raise the plexi off the top of the PCB and to keep it straight. Next the two bolts thread through the holes in the backplate and then thought the PCB, before lastly tightening the ends with the remaining nuts.
Now just pop it back into the motherboard and secure in place. Here are some final shots. Both under UV light in a dark and light room.
Thanks for reading.