<b>10-Point Multitouch Display</b><br>Interact with your B540 by using simple, intuitive gestures directly on the 23" screen. The B540 uses 10-point multitouch technology for greater accuracy and flexibility.<br>Touch model availability may vary.<br><br><b>TV Compatibility</b><br>Use your B540 as a television with either OneKey TV or an integrated TV tuner. Switch to TV mode without having to boot up the PC.<br><br><b>Integrated DVD Reader/Writer or Blu-ray Disc™ Drive</b><br>Watch movies, listen to music, and burn discs with the B540's integrated DVD reader/writer or Blu-ray Disc™ drive.<br><br><b>Enhanced graphics</b><br>Enjoy incredible multimedia and gaming when you choose B540 with discrete NVIDIA® GeForce® graphics with DirectX® 11.<br><br><b>Comfortable Use</b><br>The Lenovo Dynamic Brightness System adjusts brightness levels according to ambient light conditions, while the Lenovo Eye Distance System warns you if you're sitting too close to the screen.<br><br><b>Easy Expandabili