**Exhibit 34.2**

**REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM**

Discover Financial Services LLC 

We have examined management’s assertion, included in the accompanying management’s Assertion on Compliance with Regulation AB Criteria, that Discover FinancialServices (“DFS”) complied with the servicing criteria set forth in Item 1122(d) of the Securities and Exchange Commission’s Regulation AB for the asset backed securities transactions involving credit card receivables conducted byDiscover Card Master Trust I and Discover Card Execution Note Trust (the “Platform”) as of and for the year ended November 30, 2007, excluding the criteria set forth in Items 1122 (d)(1)(i), (d)(1)(iii), (d)(1)(iv), (d)(2)(ii),(d)(2)(iii), (d)(2)(iv), (d)(2)(v), (d)(2)(vi), (d)(2)(vii), (d)(3)(i), (d)(3)(ii), (d)(3)(iii), (d)(3)(iv), (d)(4)(i), (d)(4)(ii), (d)(4)(iii), (d)(4)(v), (d)(4)(x), (d)(4)(xi), (d)(4)(xii), (d)(4)(xiii), and (d)(4)(xv), which management hasdetermined are not applicable to the activities performed by DFS with respect to the Platform. Management is responsible for DFS’s compliance with the servicing criteria. Our responsibility is to express an opinion on management’sassertion about DFS’s compliance with the servicing criteria based on our examination. 

Our examination was conducted in accordance with attestationstandards established by the American Institute of Certified Public Accountants, as adopted by the Public Company Accounting Oversight Board (United States) and, accordingly, included examining, on a test basis, evidence about DFS’s compliancewith the applicable servicing criteria, including tests on a sample basis of the servicing activities related to the Platform, determining whether DFS performed those selected activities in compliance with the servicing criteria during the specifiedperiod and performing such other procedures as we considered necessary in the circumstances. Our procedures were limited to selected servicing activities performed by DFS during the period covered by this report and, accordingly, such samples maynot have included servicing activities related to each asset-backed transaction included in the Platform. Further, an examination is not designed to detect noncompliance arising from errors that may have occurred prior to the period specified abovethat may have affected the balances or amounts calculated or reported by DFS during the period covered by this report. We believe that our examination provides a reasonable basis for our opinion. Our examination does not provide a legaldetermination on DFS’s compliance with the servicing criteria. 

As described in management’s assertion, for servicing criteria 1122(d)(2)(i),1122(d)(4)(iv) and 1122(d)(4)(viii), DFS has engaged vendors to perform certain activities required by this servicing criteria. DFS has determined that these vendors are not considered a “servicer” as defined in Item 1101(j) ofRegulation AB, and DFS has elected to take responsibility for assessing compliance with the servicing criteria applicable to these vendors as permitted by Interpretation 17.06 of the SEC Division of Corporation Finance Manual of Publicly AvailableTelephone Interpretations (“Interpretation 17.06”). As permitted by Interpretation 17.06, DFS has asserted that it has policies and procedures in place designed to provide reasonable assurance 

that the vendors’ activities comply in all material respects with the servicing criteria applicable to this vendor. DFS is solely responsible fordetermining that it meets the SEC requirements to apply Interpretation 17.06 for the vendor and related criteria as described in its assertion, and we performed no procedures with respect to the DFS’s determination of its eligibility to useInterpretation 17.06. 

In our opinion, management’s assertion that DFS complied with the aforementioned applicable servicing criteria as of and forthe year ended November 30, 2007, for the Platform is fairly stated, in all material respects. 

 
/s/ Deloitte & Touche LLP
Chicago, Illinois

February 13,2008