Newark part number: 07W8938
Got the WI PI adapter from Newark / Eleement14.
Works as is with the Raspbian "wheezy" version 6.0 + image. The
instructions state that this adapter will not work with any other
image. The latest image is pre-configured and works native without
modifications so just ignore the configurations instruction sheet that came with the adapter. If
your image has the WIFI configuration utility on the desktop then you
are good to go. If you have an older image without and you don't want
to change images, then you will have to do the manual configuration per
the instruction sheet.
Note I was having power problems trying to use the WI PI and VGA
adapter at the same time. Screen would blank out every few
seconds and the WI PI would not work.
On the older RPi boards there are 2 fuses, one for each of the USB
ports. Fuse F1 and F2 rated 400mA each. The newer rev 2.0 RPi boards do
not have these fuses at all. I shorted out these fuses by soldering a
jumper wire across them. If you are not comfortable with that then you
will have to use a powered USB hub.