PITTSBURGH, PENNSYLVANIA, April 2, 2013 —Black Box Corporation (NASDAQ:BBOX), a leading communications system integrator, announced today that its Board of Directors has elected Mr. John Heller and Mr. Joel Trammell to the Board. Both Messrs. Heller and Trammell’s terms will expire at the next annual meeting of stockholders. At that time, it is expected that they will stand for election by the stockholders. Mr. Heller retired from Caterpillar Inc. in February 2012. He held a number of positions of increasing responsibility at Caterpillar during a 38-year career, last serving as Vice President and Chief Information Officer for more than the last 5 years. He is a graduate of Millikin University with a Bachelor of Science degree in Business Administration and holds an M.B.A. from the University of Illinois. Mr. Trammell is a Managing Partner of Lone Rock Technology Group since 2011. Mr. Trammell was a founder and the CEO of CacheIQ, Inc. from June 2010 until it was acquired by NetApp, Inc. in November 2012. Previously, he was a founder and served as the CEO of NetQoS, Inc. from June 2000 to November 2009. Mr. Trammell is a graduate of Louisiana Tech University with a Bachelor of Science degree in Electrical Engineering. “I am very pleased to have John and Joel join our Board of Directors,” said Mr. Thomas G. Greig, Chairman of Black Box Corporation’s Board of Directors. “Both bring deep expertise in many areas including enterprise technology, management and strategic planning. Their perspectives will help to drive shareholder value as Black Box continues to grow and adapt to our rapidly changing business environment. I join my fellow directors in welcoming them to the Board.” About Black Box Black Box is a leading communications system integrator dedicated to designing, sourcing, implementing and maintaining today’s complex communications solutions. Black Box services more than 175,000 clients in approximately 150 countries with approximately 200 offices throughout the world. To learn more, visit the Black Box Web site at http://www.blackbox.com. Black Box® and the Double Diamond logo are registered trademarks of BB Technologies, Inc. Any third-party trademarks appearing in this press release are acknowledged to be the property of their respective owners. Contact: Black Box Corporation Gary Doyle Vice President of Corporate Communications and Investor Relations Phone: 724-873-6788 E-mail: investors@blackbox.com