Washington, D.C. 20549


                             SCHEDULE 13G

               Under the Securities Exchange Act of 1934


                          (Amendment No. 1)*



                             3Com Corporation

                             (Name of Issuer)

                               Common Stock

                      (Title of Class of Securities)

                                885535104

                              (CUSIP Number)

                            December 29, 2000

         (Date of Event Which Requires Filing of This Statement)


Check the appropriate box to designate the rule pursuant to which this
Schedule is filed:
[X] Rule 13d-1(b)
[ ] Rule 13d-1(c)
[ ] Rule 13d-1(d)


*The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class
of securities, and for any subsequent amendment containing information
which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not
be deemed to be "filed" for the purpose of Section 18 of the Securities
Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of
that section of the Act but shall be subject to all other provisions of
the Act (however, see the Notes).
























 1   NAMES OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
     Capital Research and Management Company
     95-1411037

 2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE
     INSTRUCTIONS)                                                 (a)

                                                                    (b)

 3   SEC USE ONLY




 4   CITIZENSHIP OR PLACE OF ORGANIZATION

     Delaware


              5   SOLE VOTING POWER

                  NONE


              6   SHARED VOTING POWER
 NUMBER OF
   SHARES
                  NONE
BENEFICIALL
 Y OWNED BY
              7   SOLE DISPOSITIVE POWER
    EACH
 REPORTING
                  7,314,600
   PERSON
   WITH:

              8   SHARED DISPOSITIVE POWER

                  NONE


 9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     7,314,600   Beneficial ownership disclaimed pursuant to Rule 13d-4


 10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
     (SEE INSTRUCTIONS)



 11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

     2.1%


 12  TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

     IA













                  SECURITIES AND EXCHANGE COMMISSION
                         Washington, DC 20549

                             Schedule 13G
               Under the Securities Exchange Act of 1934

Amendment No. 1

Item 1(a)   Name of issuer:
       3Com Corporation

Item 1(b)   Address of issuer's principal executive offices:
       5400 Bayfront Plaza
       Santa Clara, CA  95052

Item 2(a)   Name of person(s) filing:
       Capital Research and Management Company

Item 2(b)   Address or principal business office or, if none,
       residence:
       333 South Hope Street
       Los Angeles, CA  90071

Item 2(c)   Citizenship:   N/A

Item 2(d)   Title of class of securities:
       Common Stock

Item 2(e)   CUSIP No.:
       885535104

Item 3   If this statement is filed pursuant to sections 240.13d-1(b)
       or 240.13d-2(b) or (c), check whether the person filings is a:
       (e)    [X]   An investment adviser in accordance with section
            240.13d-1(b)(1)(ii)(E).

Item 4   Ownership

       Provide the following information regarding the aggregate
       number and percentage of the class of securities of the issuer
       identified in Item 1.

       See page 2

       (a)    Amount beneficially owned:
       (b)    Percent of class:
       (c)    Number of shares as to which the person has:
       (i)    Sole power to vote or to direct the vote:
       (ii)   Shared power to vote or to direct the vote:
       (iii)  Sole power to dispose or to direct the disposition of:
       (iv)   Shared power to dispose or to direct the disposition of:

       Capital Research and Management Company, an investment adviser
       registered under Section 203 of the Investment Advisers Act of
       1940 is deemed to be the beneficial owner of 7,314,600 shares
       or 2.1% of the 350,077,000 shares of Common Stock believed to
       be outstanding as a result of acting as investment adviser to
       various investment companies registered under Section 8 of the
       Investment Company Act of 1940.



CUSIP: 885535104                                                Page 3 of 4

       is being filed to report the fact that as of the date hereof
       the reporting person has ceased to be the beneficial owner of
       more than 5 percent of the class of securities, check the
       following: [X]

Item 6   Ownership of More than 5% on Behalf of Another Person: N/A

Item 7   Identification and Classification of the Subsidiary Which
       Acquired the Security Being Reported on By the Parent Holding
       Company or Control Person.: N/A

Item 8   Identification and Classification of Members of the Group:
       N/A

Item 9   Notice of Dissolution of Group:  N/A

Item 10   Certification

       By signing below, I certify that, to the best of my knowledge
       and belief, the securities referred to above were acquired and
       are held in the ordinary course of business and were not
       acquired and are not held for the purpose of or with the effect
       of changing or influencing the control of the issuer of the
       securities and were not acquired and are not held in connection
       with or as a participant in any transaction having that purpose
       or effect.

   Signature

       After reasonable inquiry and to the best of my knowledge and
       belief, I certify that the information set forth in this
       statement is true, complete and correct.



        Date:          February 9, 2001


        Signature:     *Paul G. Haaga, Jr.

        Name/Title:    Paul G. Haaga, Jr., Executive Vice
                       President

                       Capital Research and Management Company




        *By

               James P. Ryan
               Attorney-in-fact

               Signed pursuant to a Power of Attorney dated December
               19, 2000 included as an Exhibit to this Schedule 13G
               filed with the Securities and Exchange Commission by
               Capital Research and Management


                         POWER OF ATTORNEY


The undersigned do hereby appoint James P. Ryan, Anna Jacobs Griffith and
Angela Mitchell, and each of them, acting singly, with full power of
substitution, as the true and lawful attorney of the undersigned, to sign on
behalf of the undersigned in respect of the ownership of equity securities
deemed held by the undersigned, Capital Research and Management Company, AMCAP
Fund, Inc., American Balanced Fund, Inc., American Mutual Fund, Inc., American
Funds Insurance Series (Growth Fund, International Fund, Growth-Income Fund,
Asset Allocation Fund, Global Growth Fund, Global Small Capitalization Fund,
New World Fund), The Bond Fund of America, Inc., Capital Income Builder, Inc.,
Capital World Growth and Income Fund, Inc., EuroPacific Growth Fund,
Fundamental Investors, Inc., The Growth Fund of America, Inc., The Income Fund
of America. Inc., The Investment Company of America, The New Economy Fund, New
Perspective Fund, Inc., New World Fund, Inc., SMALLCAP World Fund, Inc., and
Washington Mutual Investors Fund, Inc., and to be reported pursuant to Sections
13(d), 13(f) and 13(g) of the Securities Exchange Act of 1934, as amended, and
to execute joint filing agreements with respect to such filings.

IN WITNESS WHEREOF, this Power of Attorney, has been executed as of the 19th
day of December, 2000.

Capital Research and Management Company

/s/ Paul G. Haaga, Jr.
Name: Paul G. Haaga, Jr.
Title: xecutive Vice President

American Balanced Fund, Inc.
The Growth Fund of America, Inc.
The Income Fund of America, Inc.

/s/ Paul G. Haaga, Jr.
Name: Paul G. Haaga, Jr.
Title: Senior Vice President

AMCAP Fund, Inc.
American Mutual Fund, Inc.
The Bond Fund of America, Inc.
Fundamental Investors, Inc.

/s/ Julie F. Williams
Name: Julie F. Williams
Title: Secretary

American Funds Insurance Series
The New Economy Fund
SMALLCAP World Fund, Inc.

/s/ Chad L. Norton
Name: Chad L. Norton
Title: Secretary

Capital Income Builder, Inc.
Capital World Growth and Income Fund, Inc.
EuroPacific Growth Fund
The Investment Company of America
New Perspective Fund, Inc.
New World Fund, Inc.

/s/ Vincent P. Corti
Name: Vincent P. Corti
Title: Secretary

Washington Mutual Investors Fund, Inc.

/s/ Howard L. Kitzmiller
Name: Howard L. Kitzmiller
Title: Senior Vice President, Secretary and Assistant Treasurer