Which subdevice to use

Hi All,

i got the gnuradio companion to work, therefore
i test the example <usrb_wbfm_receive.grc>.

Which subdevice is the right one for me ?

usrp_diagnostics doesn’t show me, which one is
the .
What means A:0 ?
‘A’ is the Daughterboard and ‘0’ is the input/output ?

I have 3 daughterboards on my USRP. Here is a Picture:
< http://img232.imageshack.us/my.php?image=img5408io8.jpg >

Regards Markus