• Best Buy invests $2.15 billion for a 50 percent stake in the European joint venture.
• The 2,400 Carphone stores in nine countries will keep their names but will sell cameras, laptops and DVD players.
• Best Buy will put its name on large-format stores it plans to open in Europe starting in 2009.
• To finance the deal, Best Buy is dropping its $800 million share buyback plan.
