[Alsa-user] Two USB sound cards - which is which?

I have a system with 2 identical USB sound cards: athena:/proc/asound# cat cards 0 [Audio ]: USB-Audio - USB Audio C-Media INC. USB Audio at usb-:00:1d.2-1, full speed 1 [Audio_1]: USB-Audio - USB Audio C-Media INC. USB Audio at

Re: [Alsa-user] Two USB sound cards - which is which?

The problem is that I can't tell which is which. Every time the system boots the cards move around. Since they're identical I can't tell them by usbid: athena:/proc/asound# cat card[01]/usbid 0d8c:0001 0d8c:0001 [...] Is there some machine readable way to tell these cards apart?