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http://www.keian.co.jp/new_pro_hep/ksdusb/ksdusb.html
http://itpro.nikkeibp.co.jp/article/NEWS/20060131/228278/
http://dc.watch.impress.co.jp/cda/accessories/2006/01/31/3122.html
http://japan.cnet.com/news/media/story/0,2000047715,20095509,00.htm?ref=rss
http://www.tillanosoft.com/ce/2005j.html