Dell has agreed to cooperate with AMD's subpoena in regards to the antitrust case against Intel. Dell is seen as a key witness in AMD's case against the chip giant:

Dell, the largest PC maker, buys microprocessors exclusively from Intel. The Texas-based PC maker agreed to preserve relevant information and copy hard drives of employees identified as "custodians" -- those who were involved in negotiating microprocessor purchases.

This news article was written on September 10, 2005, quoting Reuters.