UNITED STATES
                     SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549

                                  FORM 10-K


  (Mark one)

  /X/ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
      EXCHANGE ACT OF 1934
      For the fiscal year ended December 31, 2007

      OR


  / / TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
      EXCHANGE ACT OF 1934
      For the transition period from ____________ to ____________



      Commission file number: 333-131727-24

      ACE Securities Corp. Home Equity Loan Trust, Series 2007-SL1
      (exact name of issuing entity as specified in its charter)

      ACE Securities Corp.
      (exact name of the depositor (as registrant on behalf of the issuing
      entity) as specified in its charter)

      DB Structured Products, Inc.
      (exact name of the sponsor as specified in its charter)



  Delaware                                06-1442101
  (State or other jurisdiction of         (I.R.S. Employer
  incorporation or organization)          Identification No.)



  6525 Morrison Boulevard
  Suite 318
   Charlotte, NC                                28211
  (Address of principal executive             (Zip Code)
  offices)


 Telephone number, including area code: (704) 365-0569



  Securities registered pursuant to Section 12(b) of the Act:

    NONE.



  Securities registered pursuant to Section 12(g) of the Act:

    NONE.



  Indicate by check mark if the registrant is a well-known seasoned issuer, as
  defined in Rule 405 of the Securities Act.

    Yes ___     No  X



  Indicate by check mark if the registrant is not required to file reports
  pursuant to Section 13 or Section 15(d) of the Act.

    Yes ___     No  X



  Note - Checking the box above will not relieve any registrant required to
  file reports pursuant to Section 13 or 15(d) of the Exchange Act from their
  obligations under those Sections.


  Indicate by check mark whether the registrant (1) has filed all reports
  required to be filed by Section 13 or 15(d) of the Securities Exchange Act
  of 1934 during the preceding 12 months (or for such shorter period that the
  registrant was required to file such reports), and (2) has been subject to
  such filing requirements for the past 90 days.

    Yes  X      No ___



  Indicate by check mark if disclosure of delinquent filers pursuant to Item
  405 of Regulation S-K (Section 229.405 of this chapter) is not contained
  herein, and will not be contained, to the best of registrant's knowledge, in
  definitive proxy or information statements incorporated by reference in Part
  III of this Form 10-K or any amendment to this Form 10-K.

    Not applicable.



  Indicate by check mark whether the registrant is a large accelerated filer,
  an accelerated filer, a non-accelerated filer, or a smaller reporting
  company.  See the definitions of "large accelerated filer", "accelerated
  filer" and "smaller reporting company" in Rule 12b-2 of the Exchange Act.

   Large accelerated filer ___
   Accelerated filer ___
   Non-accelerated filer X (Do not check if a smaller reporting company)
   Smaller reporting company ___

  Indicate by check mark whether the registrant is a shell company (as defined
  in Rule 12b-2 of the Act).

    Yes ___     No  X



  State the aggregate market value of the voting and non-voting common equity
  held by non-affiliates computed by reference to the price at which the
  common equity was last sold, or the average bid and asked price of such
  common equity, as of the last business day of the registrant's most recently
  completed second fiscal quarter.

    Not applicable.



  Indicate by check mark whether the registrant has filed all documents and
  reports required to be filed by Section 12, 13 or 15(d) of the Securities
  Exchange Act of 1934 subsequent to the distribution of securities under a
  plan confirmed by a court.

    Not applicable.



  Indicate the number of shares outstanding of each of the registrant's
  classes of common stock, as of the latest practicable date.

    Not applicable.



  DOCUMENTS INCORPORATED BY REFERENCE

  List hereunder the following documents if incorporated by reference and the
  Part of the Form 10-K (e.g., Part I, Part II, etc.) into which the document
  is incorporated: (1)Any annual report to security holders; (2) Any proxy or
  information statement; and (3)Any prospectus filed pursuant to Rule 424(b)
  or (c) under the Securities Act of 1933. The listed documents should be
  clearly described for identification purposes (e.g., annual report to
  security holders for fiscal year ended December 24, 1980).

    Not applicable.





                                     PART I

  Item 1.      Business.

               Omitted.


  Item 1A.     Risk Factors.

               Omitted.


  Item 1B.     Unresolved Staff Comments.

               Not applicable.


  Item 2.      Properties.

               Omitted.


  Item 3.      Legal Proceedings.

               Omitted.


  Item 4.      Submission of Matters to a Vote of Security Holders.

               Omitted.




                                     PART II

  Item 5.      Market for Registrant's Common Equity, Related Stockholder
               Matters and Issuer Purchases of Equity Securities.

               Omitted.


  Item 6.      Selected Financial Data.

               Omitted.


  Item 7.      Management's Discussion and Analysis of Financial Condition and
               Results of Operation.

               Omitted.


  Item 7A.     Quantitative and Qualitative Disclosures About Market Risk.

               Omitted.


  Item 8.      Financial Statements and Supplementary Data.

               Omitted.


  Item 9.      Changes in and Disagreements With Accountants on Accounting and
               Financial Disclosure.

               Omitted.


  Item 9A.     Controls and Procedures.

               Omitted.


  Item 9A(T).  Controls and Procedures.

               Omitted.


  Item 9B.     Other Information.

               None.




                                    PART III

  Item 10.     Directors, Executive Officers and Corporate Governance.

               Omitted.


  Item 11.     Executive Compensation.

               Omitted.


  Item 12.     Security Ownership of Certain Beneficial Owners and Management
               and Related Stockholder Matters.

               Omitted.


  Item 13.     Certain Relationships and Related Transactions, and Director
               Independence.

               Omitted.


  Item 14.     Principal Accounting Fees and Services.

               Omitted.




   ADDITIONAL DISCLOSURE ITEMS PURSUANT TO GENERAL INSTRUCTION J


Item 1112(b) of Regulation AB, Significant Obligor Financial Information.

No single obligor represents 10% or more of the pool assets held by the issuing
entity.



1114(b)(2) Of Regulation AB, Credit Enhancement and Other Support, Except for
Certain Derivative Instruments (Information Regarding Significant Enhancement
Providers Financial Information).

No entity or group of affiliated entities provides any external credit
enhancement or other support for the certificates within this transaction as
described under Item 1114(a) of Regulation AB.



Item 1115(b) of Regulation AB, Certain Derivatives Instruments (Financial
Information).

Swiss Re Financial Products Corporation provides an interest rate swap
derivative instrument for the trust as disclosed in the 424(b)(5) Prospectus
filed on March 2, 2007.  No additional disclosure is necessary because the
significance percentage for the swap derivative instrument is less than 10%.



Item 1117 of Regulation AB, Legal Proceedings.

Ocwen Loan Servicing, LLC
On February 9, 2006, a trial court in Galveston, Texas entered judgment in the
amount of $1.8 million in compensatory and statutory damages and attorneys' fees
against Ocwen Loan Servicing, LLC ("Ocwen") in favor of a plaintiff borrower
whose mortgage loan was serviced by Ocwen. The plaintiff brought the claims
under the Texas Deceptive Trade Practices Act and other state statutes and
common law generally alleging that Ocwen engaged in improper loan servicing
practices. Ocwen appealed the decision and the litigation concluded with a final
settlement on January 16, 2008.

American Home Mortgage Corp.
American Home Mortgage Corp., an originator, filed for bankruptcy under Chapter
11 of the U.S. Bankruptcy Code on August 6, 2007 in the U.S. Bankruptcy Court
for the District of Delaware.



Item 1119 of Regulation AB, Affiliations and Certain Relationships and Related
Transactions.

The information regarding this Item has been previously disclosed in a 424(b)(5)
Prospectus filed on March 2, 2007.



Item 1122 of Regulation AB, Compliance with Applicable Servicing Criteria.

The reports on assessment of compliance with the servicing criteria for
asset-backed securities and the related attestation reports on such assessments
of compliance are attached hereto under Item 15.

Assurant, Inc. disclosed the following material noncompliance with the
servicing criteria set forth in Item 1122(d)(4)(xii) of Regulation AB
applicable to the Company during the year ended December 31, 2007. As required
by Item 1122(d)(4)(xii) of Regulation AB, any late payment penalties in
connection with any payment to be made on behalf of an obligor are paid from
the servicer's funds are not charged to the obligor, unless the late payment
was due to the obligor's error or omission. Assurant, Inc. did not have, during
the Reporting Period (as defined in the assessment of compliance), sufficient
policies and procedures to capture the
information with respect to the Platform Transactions (as defined in the
assessment of compliance) necessary to determine
compliance with 1122(d)(4)(xii).

The assessment of compliance for GMAC Mortgage, LLC ("GMACM") disclosed the
following
material noncompliance, as applicable during the twelve months ended
December 31, 2007:

Certain custodial account reconciliations were not reviewed within timelines
outlined in the GMACM's policies and procedures, as required by criteria
1122 (d)(2)(vii)(C).  Certain custodial accounts had reconciling items which
were not resolved within 90 calendar days of original identification, as
required by criteria 1122(d)(2)(vii)(D).

Although each servicing criterion required by Item 1122(d) of Regulation AB is
addressed in one or more of the Assessments of Compliance with Servicing
Criteria and related Attestation Reports included with this report, GMACM's
Assessment of Compliance and related Attestation Report did not address each of
the servicing criteria that GMACM was required to address under the terms of the
related Servicing Agreement. GMACM has not identified such failure to provide an
Assessment and Attestation for these items as a material failure to fulfill its
obligations under the related servicing agreement in its Servicer Compliance
Statement provided under Item 1123 of Regulation AB, because GMACM asserts that
those items are not applicable to GMACM.



Item 1123 of Regulation AB, Servicer Compliance Statement.

The servicer compliance statements are attached hereto under Item 15.



                               Part IV

  Item 15. Exhibits, Financial Statement Schedules.

  (a) Exhibits.

  (4) The Pooling and Servicing Agreement, dated  as of February 1, 2007 among
  ACE Securities Corp. as Depositor, Ocwen Loan Servicing, LLC as a Servicer,
  GMAC Mortgage, LLC as a Servicer, Wells Fargo Bank, National Association as
  Master Servicer and Securities Administrator and HSBC Bank USA, National
  Association, as Trustee (incorporated herein by reference from Exhibit 4.1
  of the Current Report on form 8-K of the registrant, as filed with the
  Commission).

  (10) See Exhibit (4) of Item 15(a) above.

  (31) Rule 13a-14(d)/15d-14(d) Certification.

  (33) Reports on assessment of compliance with servicing criteria for
  asset-backed securities.


    <TABLE>
    
      <c>

    33.1 Assurant, Inc. as Sub-Contractor for Ocwen Loan Servicing, LLC
    33.2 Deutsche Bank National Trust Company as Custodian
    33.3 First American Real Estate Solutions of Texas, L.P. as Sub-Contractor for Ocwen
    Loan Servicing, LLC
    33.4 GMAC Bank as Sub-Contractor for GMAC Mortgage, LLC
    33.5 GMAC Mortgage, LLC as Servicer
    33.6 Ocwen Loan Servicing, LLC as Servicer
    33.7 Regulus Group LLC as Sub-Contractor for Ocwen Loan Servicing, LLC
    33.8 Wells Fargo Bank, N.A. as Master Servicer and Securities Administrator
    33.9 Wells Fargo Bank, N.A. as Paying Agent
    33.10 Wells Fargo Bank, N.A. as Custodian

    </TABLE>


  (34) Attestation reports on assessment of compliance with servicing criteria
  for asset-backed securities.


    <TABLE>
    
      <c>

    34.1 Assurant, Inc. as Sub-Contractor for Ocwen Loan Servicing, LLC
    34.2 Deutsche Bank National Trust Company as Custodian
    34.3 First American Real Estate Solutions of Texas, L.P. as Sub-Contractor for Ocwen
    Loan Servicing, LLC
    34.4 GMAC Bank as Sub-Contractor for GMAC Mortgage, LLC
    34.5 GMAC Mortgage, LLC as Servicer
    34.6 Ocwen Loan Servicing, LLC as Servicer
    34.7 Regulus Group LLC as Sub-Contractor for Ocwen Loan Servicing, LLC
    34.8 Wells Fargo Bank, N.A. as Master Servicer and Securities Administrator
    34.9 Wells Fargo Bank, N.A. as Paying Agent
    34.10 Wells Fargo Bank, N.A. as Custodian

    </TABLE>


   (35) Servicer compliance statement.


    <TABLE>
    
       <c>

    35.1 GMAC Mortgage, LLC as Servicer
    35.2 Ocwen Loan Servicing, LLC as Servicer
    35.3 Wells Fargo Bank, N.A. as Master Servicer and Securities Administrator

    </TABLE>


   (b) See Exhibits identified in paragraph (a) of Item 15 above.

   (c) Omitted.



                          SIGNATURES


  Pursuant to the requirements of Section 13 or 15(d) of the Securities
  Exchange Act of 1934, the registrant has duly caused this report to be
  signed on its behalf by the undersigned, thereunto duly authorized.


   ACE Securities Corp. Home Equity Loan Trust, Series 2007-SL1
   (Issuing Entity)

   Wells Fargo Bank, N.A.
   (Master Servicer)

   /s/ Kristen Ann Cronin
   Kristen Ann Cronin, Vice President
   (senior officer in charge of the servicing function of the master
   servicer)


    Date:   March 27, 2008



  Exhibit Index

  Exhibit No.


   (31) Rule 13a-14(d)/15d-14(d) Certification.

   (33) Reports on assessment of compliance with servicing criteria for
   asset-backed securities.


    <TABLE>

    
      <c>
    33.1 Assurant, Inc. as Sub-Contractor for Ocwen Loan Servicing, LLC
    33.2 Deutsche Bank National Trust Company as Custodian
    33.3 First American Real Estate Solutions of Texas, L.P. as Sub-Contractor for Ocwen
    Loan Servicing, LLC
    33.4 GMAC Bank as Sub-Contractor for GMAC Mortgage, LLC
    33.5 GMAC Mortgage, LLC as Servicer
    33.6 Ocwen Loan Servicing, LLC as Servicer
    33.7 Regulus Group LLC as Sub-Contractor for Ocwen Loan Servicing, LLC
    33.8 Wells Fargo Bank, N.A. as Master Servicer and Securities Administrator
    33.9 Wells Fargo Bank, N.A. as Paying Agent
    33.10 Wells Fargo Bank, N.A. as Custodian

    </TABLE>

   (34) Attestation reports on assessment of compliance with servicing
   criteria for asset-backed securities.


    <TABLE>

    
      <c>
    34.1 Assurant, Inc. as Sub-Contractor for Ocwen Loan Servicing, LLC
    34.2 Deutsche Bank National Trust Company as Custodian
    34.3 First American Real Estate Solutions of Texas, L.P. as Sub-Contractor for Ocwen
    Loan Servicing, LLC
    34.4 GMAC Bank as Sub-Contractor for GMAC Mortgage, LLC
    34.5 GMAC Mortgage, LLC as Servicer
    34.6 Ocwen Loan Servicing, LLC as Servicer
    34.7 Regulus Group LLC as Sub-Contractor for Ocwen Loan Servicing, LLC
    34.8 Wells Fargo Bank, N.A. as Master Servicer and Securities Administrator
    34.9 Wells Fargo Bank, N.A. as Paying Agent
    34.10 Wells Fargo Bank, N.A. as Custodian

    </TABLE>

   (35) Servicer compliance statement.


    <TABLE>

    
       <c>
    35.1 GMAC Mortgage, LLC as Servicer
    35.2 Ocwen Loan Servicing, LLC as Servicer
    35.3 Wells Fargo Bank, N.A. as Master Servicer and Securities Administrator

    </TABLE>