I remember when Linksys (and others) had wireless devices that worked really well in Linux. I bought 4 of them and got two different versions of the thing with

I remember when Linksys (and others) had wireless devices that worked really well in Linux. I bought 4 of them and got two different versions of the thing with radically different insides. Someone at Linksys must have noticed that SKU X was selling really well and looked for ways to cut the cost by replacing the innards. Eventually, online stores were putting the PCB revision number in the sale listings because people had to pick a specific rev.