POWER OF ATTORNEY

      KNOW ALL MEN BY THESE PRESENTS, that the undersigned constitutes and
appoints Ronald Basso as the undersigned's true and lawful attorney-in-fact to:  (i) execute for
and on behalf of the undersigned, in the undersigned's capacity as an officer and/or director of
Black Box Corporation (the "Company"), Forms 3, 4 and 5 (or such similar or successor forms as
may be adopted) in accordance with Section 16(a) of the Securities Exchange Act of 1934, as
amended (the "Exchange Act") and the rules promulgated thereunder; (ii) do and perform any
and all acts for and on behalf of the undersigned which may be necessary or desirable to
complete and execute any such Form 3, 4 or 5 (or such similar or successor forms as may be
adopted) and timely file such form with the United States Securities and Exchange Commission,
any stock exchange or similar authority; and (iii) take any other action of any type whatsoever in
connection with the foregoing which, in the opinion of such attorney-in-fact, may be of benefit
to, in the best interest of or legally required by, the undersigned, it being understood that the
documents executed by such attorney-in-fact on behalf of the undersigned pursuant to this
Power of Attorney shall be in such form and shall contain such terms and conditions as such
attorney-in-fact may approve in such attorney-in-fact's sole discretion.
      The undersigned hereby grants to such attorney-in-fact full power and authority to do
and perform any and every act and thing whatsoever requisite, necessary or proper to be done in
the exercise of any of the rights and powers herein granted, as fully to all intents and purposes as
the undersigned might or could do if personally present, with full power of substitution or
revocation, hereby ratifying and confirming all that such attorney-in-fact, or such attorney-in-
fact's substitute or substitutes, shall lawfully do or cause to be done by virtue of this Power of
Attorney and the rights and powers herein granted.  The undersigned acknowledges that the
foregoing attorney-in-fact, in serving in such capacity at the request of the undersigned, is not
assuming, nor is the Company assuming, any of the undersigned's responsibilities to comply with
Section 16 of the Exchange Act.
      This Power of Attorney shall remain in full force and effect until the undersigned is no
longer required to file Forms 3, 4 and 5 (or such similar or successor forms as may be adopted)
with respect to the undersigned's holdings of and transactions in securities issued by the
Company, unless earlier revoked by the undersigned in a signed writing delivered to the
foregoing attorney-in-fact.
      IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of this 4th day of March, 2013.
Signature:  /s/ John S. Heller
Name:  John S. Heller