Works for Samsung as well. Galaxy Tab series has 30 pin connectors and the MHL/USB port on the Note series (Note 2 and above) has 11 pins instead of 5.
Had to buy a new HDMI adapter for my Note 8.0 because of this.
ETA: Anyone have a pinout for the Nook connector? It may not be proprietary like Apple or Samsung. It may be a
PDMI connector.