Exhibit 15

July 17, 2002

PC Connection, Inc.
730 Milford Road
Merrimack, New Hampshire

We have made a review, in accordance with standards established by the American
Institute of Certified Public Accountants, of the unaudited interim financial
information of PC Connection, Inc. and subsidiaries for the periods ended June
30, 2002 and 2001, as indicated in our report dated July 17, 2002; because we
did not perform an audit, we expressed no opinion on that information.

We are aware that our report referred to above, which is included in your
Quarterly Report on Form 10-Q for the quarter ended June 30, 2002, is
incorporated by reference in Registration Statement Nos. 333-40172, 333-50845,
333-50847, 333-66450, 333-69981, 333-83943, and 333-91584 on Form S-8.

We also are aware that the aforementioned report, pursuant to Rule 436(c) under
the Securities Act of 1933, is not considered a part of the Registration
Statement prepared or certified by an accountant or a report prepared or
certified by an accountant within the meaning of Sections 7 and 11 of that Act.

Deloitte & Touche LLP

Boston, Massachusetts