Here is one for our FR computer gurus: Why are PCIe expansion cards with a DisplayPort capable USB-C port (DP alternate mode) hard to find for desktop PC's? Many laptops, like my Dell Latitude 5490, have a DisplayPort capable USB-C port. Yet it seems most desktops of roughly the same vintage, such as my Dell Precision 3430 (and many a newer desktop too), do not have a DisplayPort capable USB-C port. (My 3430 has a high speed USB-C port, but it is not DP capable.) Why the omission on the desktops?