Securities and Exchange Commission
Judiciary Plaza
450 Fifth Street, N.W.
Washington, D.C.  20549

	Re:	ScanSource, Inc.

Ladies and Gentlemen:

	Pursuant to General Instruction 7 to Form 3 (Initial Statement of Beneficial
Ownership), Form 4 (Statement of Changes in Beneficial Ownership) and Form 5 (Annual
Statement of Changes in Beneficial Ownership) promulgated by the Securities and Exchange
Commission pursuant to Section 16 of the Securities Exchange Act of 1934, the undersigned
director of ScanSource, Inc. (the "Company") hereby authorizes and designates John J. Ellsworth,
J. Creighton Lynes, Justin M. Grow, and Robert B. Murphy, and each of them, to execute and
file with the Commission on the undersigned's behalf any and all statements on Form 3,
Form 4 or Form 5 relating to the undersigned's beneficial ownership of securities of the
Company as required by Section 16 (a) of the Securities Exchange Act of 1934 and the rules
of the Commission promulgated thereunder.  This authorization and designation shall be
effective for so long as the undersigned remains subject to the provisions of Section 16
of the Securities Exchange Act of 1934.

	Effective as of the 4th day of May, 2011.



						/s/ Michael J. Grainger
						--------------------------
						     Michael J. Grainger