Does anyone know which chiip set the usb wiireless n adaptor in the title uses?

lspci does not offer any clues ( Says Belkin Play ).

I checked with the online support and they did not know...

I also have a Linksys WUSB600N that lsusb identifies as a linksys product and it
is not clear to me what the chipset in that adaptor is...( the RT2870usb driver does
not recognize the rascal.

I an looking for a usb adaptor that offers better than G speeds...

I have a Sparklan adaptor that does not work any more ;(