finding vendor,product id for usb devie

["Ashok kumar" <ashokmudalister@xxxxxxxxx>]

Hi,
i have pendrive. vendor id : 0x09a6 and product id is :0x8001
this is pen drive is supported by linux and using it . that is not a  proble.

i am looking into the source code now.
but i am not find this vendor product id combination in usb code?

is it not there ? or 
am i missed that?

how it is loading corresponding driver for that.


Ashok