Even large, US-based companies sometimes change stuff without updating the SKU. This was a huge problem back in the day with getting WiFi adapters that worked i

Even large, US-based companies sometimes change stuff without updating the SKU. This was a huge problem back in the day with getting WiFi adapters that worked in Linux - I've seen chipsets changed out without updating the SKU, even as far as chipset brand. If you were lucky, there'd be a hardware revision listed on the product near the serial number, but sometimes not even that. I think this has happened with a lot of the RTL-SDR adapters as well.