Did you see the follow up comments by the way? Compared to trying to get support from a commercial vendor the FOSS world never ceases to amaze me with the degree of effort people are willing to make to get other people on the way again.

So, let's strike 'a couple of years old' and add 'anything mainstream that is a couple of years old'. We're going to end up with a very long definition if we have to add all of the possible exceptions but I suspect there are more devices capable of running Linux by now than there are of running Windows!