I/O Shield Plate Blank Backplate PVC with Adhesive, IO Shield Plate Blank Universal DIY for All PC Motherboards Desktop Computer Case, Cutting Any (172 * 58mm, 2Pcs, Black)

Yet to fit this properly, but it looks like it will be adequate even if a bit of a faf to fit. The plastic is pretty thin and flimsy - not at all rigid, so will rely on the adhesive to survive the rigors of daily life. If you are going to do a lot of input swapping you might need a more robust solution. But the templates are helpful, and the pack arrived very quickly and well enough packaged. A qualified recommendation, but it is a recommendation.

Unless you own a stencil do not purchase, if you do you may as well just get the correct Io shield. A little too expensive for what it is.

I used this to cover and protect the back connection plate on my p.c. to stop dust and debris from entering the unit . It is a bit fiddly to cut but as long as you take care a reasonable job can be achieved. I’m happy with it although it is quiet expensive for a piece of uncut mesh .

If you've every bought a used motherboard without an IO shield this is a great way to make one yourself and not have a hole in the back of your case. It's a 2 pack, but you're likely to mess up your first attempt, so if you need two, buy another pack. I used a craft knife and was easily able to cut out some relatively crude holes. Not as pretty as the original shield, but better than nothing. It does leave a relatively sharp edge, so be a bit careful.Template also doesn't have firewire, which albeit niche, would have been nice to have for making I/O shields for older boards.