https://www.amazon.co.jp/dp/B007WPMIN8 http://buffalo.jp/product/multimedia/headset/bshsau01bk/ アウトレットで1000円弱

http://www.thinkwiki.org/wiki/ThinkPad_Ultra_Dock 1x VGA port 1x DVI-D port (single-link), 2x DisplayPort, 1x HDMI port (only 2 can be active) 3x USB 2.0 ports, one port supports always-on USB charging 3x USB 3.0 ports 10/100/1000 Gigabit …