firmware support involves supplying the binary blobs that the driver needs to upload to certain peripherals like intel wireless cards.
personally i would like to see non-free software kept out of the main disc images but the images including firmware being more visibly advertised and it made clear on the download pages what hardware requires it and who needs it.
personally i would like to see non-free software kept out of the main disc images but the images including firmware being more visibly advertised and it made clear on the download pages what hardware requires it and who needs it.