Power ON the FRITZ! Wlan Adapter N/G near your router.
Wait that on your FRITZ! Wlan Adapter N/G appear the image below,
next touch the two red dot on the left of the screen, see the image below.
Continue to touch the two red dot on the left, until on the display appear the word WPS.
Now touch the two red dot on the right, and the word WPS start to flash.
Start your router in WPS mode (some router has a dedicated button, on some is necessary enter in the page of the router to start the WPS mode).
Now the router and the FRITZ! Wlan Adapter N/G are exchanging passwords, they are pairing.
At the end of the pairing, on the FRITZ! Wlan Adapter N/G you see a symbol like a “v” that indicate that the pairing is done successfully.
That is all, your FRITZ! Wlan Adapter N/G is ready to use.