Looking at 2 routers, both are from Asus and have the same model number but they seem to be quite different.
Draft:
Amazon.com: ASUS RT-N16 - Wireless Router - 802.11b/g/n (draft) - 3 external antenna - Print/File server (enabled through USB port): Electronics
Non-Draft:
Amazon.com: ASUS RT-N16 Wireless-N Gigabit Router: Electronics
Draft:

Non-Draft:
