POSASR

As filed with the Securities and Exchange Commission on December 9, 2010

Registration No. 333-148137

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

POST-EFFECTIVE AMENDMENT NO. 1
TO

FORM S-3

REGISTRATION STATEMENT
UNDER THE SECURITIES ACT OF 1933

ADC Telecommunications, Inc.

(Exact name of registrant as specified in its charter)

Minnesota
(State or other jurisdiction of
incorporation or organization) 41-0743912
(I.R.S. Employer
Identification No.)

13625 Technology Drive
Eden Prairie, Minnesota 55344
(952) 938-8080
(Address, including zip code, and telephone
number, including area code, of registrant’s principal executive offices)

Harold G. Barksdale	Copy to:
Vice President and Secretary ADC Telecommunications, Inc. 13625 Technology Drive Eden Prairie, Minnesota 55344 (952) 938-8080 (Name, address, including zip code, and telephone number, including area code, of agent for service)	Amy L. Schneider, Esq. Dorsey & Whitney LLP 50 South Sixth Street, Suite 1500 Minneapolis, Minnesota 55402 (612) 340-2600

     Approximate date of commencement of proposed sale to the public: Not Applicable.

     If the only securities being registered on this Form are being offered pursuant to dividend or interest reinvestment plans, please check the following box. o

     If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, other than securities offered only in connection with dividend or interest reinvestment plans, check the following
box. o

     If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. o

     If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. o

     If this Form is a registration statement pursuant to General Instruction I.D. or a post-effective amendment thereto that shall become effective upon filing with the Commission pursuant to Rule 462(e) under the Securities Act, check the following box. þ

     If this Form is a post-effective amendment to a registration statement filed pursuant to General Instruction I.D. filed to register additional securities or additional classes of securities pursuant to Rule 413(b) under the Securities Act, check the following box. o

     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. (Check one):

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

DEREGISTRATION OF SECURITIES

          This Post-Effective Amendment No. 1 relates to the Registration Statement on Form S-3 (File No. 333-148137) (the “Registration Statement”) of ADC Telecommunications, Inc. (the “Company”), which was filed with the U.S. Securities and Exchange Commission on December 18, 2007. The Registration Statement registered $225,000,000 Convertible Subordinated Notes due 2015 and $225,000,000 Convertible Subordinated Notes due 2017 (collectively, the “Notes”), and an indeterminate number of shares of the Company’s common stock, par value $0.20 per share, issuable upon conversion of the Notes (the “Common Stock” and together with the Notes, the “Securities”).

          On December 9, 2010, pursuant to the terms of the Agreement and Plan of Merger, dated as of July 12, 2010 and amended as of July 24, 2010, among Tyco Electronics Ltd. (“Parent”), Parent’s wholly owned subsidiary, Tyco Electronics Minnesota, Inc. (“Purchaser”), and the Company, Purchaser was merged with and into the Company (the “Merger”) with the Company surviving the Merger as a wholly owned subsidiary of Parent. As a result of the Merger, the Company’s Common Stock, is being delisted from The NASDAQ Stock Market LLC and deregistered under the Securities Exchange Act of 1934, as amended.

          In accordance with the undertaking in Part II of the Registration Statement (pursuant to Item 512(a)(3) of Regulation S-K), the Company is filing this Post-Effective Amendment No. 1 to the Registration Statement to remove from registration the Securities registered under the Registration Statement that remain unsold as of the date hereof.

SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-3 and has duly caused this Post-Effective Amendment No. 1 to the Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Eden Prairie, State of Minnesota, on December 9, 2010.

ADC TELECOMMUNICATIONS, INC.
By:	/s/ Steven G. Nemitz
	Steven G. Nemitz
	Vice President and Controller

     Pursuant to the requirements of the Securities Act of 1933, this Post-Effective Amendment No. 1 to the Registration Statement has been signed by the following persons in the indicated capacities on December 9, 2010.

Signature	Title
*	President
Alan Clarke	(principal executive officer)
*	Vice President, Assistant Treasurer and Director
Mario Calastri	(principal financial officer)
/s/ Steven G. Nemitz	Vice President and Controller
Steven G. Nemitz	(principal accounting officer)
*	Director
Harold G. Barksdale
*	Director
Richard J. Suminski

*By:	/s/ Steven G. Nemitz
	Steven G. Nemitz
	Attorney-in-Fact

EXHIBIT INDEX

Exhibit
Number	Description
24.1	Power of Attorney

EX-24.1

Exhibit 24.1

POWER OF ATTORNEY

     KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below hereby constitutes and appoints Steven G. Nemitz, Mario Calastri and Harold G. Barksdale, and each of them, the undersigned’s true and lawful attorneys-in-fact and agents, each acting alone, with the powers of substitution and revocation, for the undersigned and in the undersigned’s name, place and stead, in any and all capacities, to execute and/or file with the Securities and Exchange Commission any and all amendments (including post-effective amendments) to all of ADC Telecommunications, Inc.’s registration statements that are currently effective, with all exhibits thereto and other documents in connection therewith, including the following:

1.	Form S-8s (Nos. 033-40356, 033-52635, 033-58409, 333-25569, 333-80945 and 333-32416) registering shares under the 1991 Stock Incentive Plan;
2.	Form S-8s (Nos. 033-40357, 333-25623, 333-56808, 333-56806, 333-147002 and 333-83498) registering shares under the Global Stock Incentive Plan;
3.	Form S-8 (No. 033-52637) registering shares under the 1994 Employee Stock Purchase Plan;
4.	Form S-8 (No. 033-58407) registering shares under the Retirement Savings Plan;
5.	Form S-8 (No. 333-04481) registering shares under the Non-Incentive Stock Option And Indemnification Agreement;
6.	Form S-8 (No. 333-25311) registering shares under the Option Conversion Agreement;
7.	Form S-8 (No. 333-37619) registering shares under the 1997 Newnet Stock Option Plan;
8.	Form S-8 (No. 333-66169) registering shares under the ADC/Teledata Key Employee Stock Option Plan (1998), ADC/Teledata Key Employee Stock Option Plan (1994-1997) and ADC/Teledata Director Share Incentive Plan (1992);
9.	Form S-8 (No. 333-80943) registering shares under the ADC Telecommunications, Inc./Spectracom, Inc. 1997 Stock Option Plan;
10.	Form S-8 (No. 333-88669) registering shares under the ADC/Saville Share Option Plan;

11.	Form S-8 (No. 333-94059) registering shares under the ADC/NVISION Share Option Plan;
12.	Form S-8 (No. 333-37898) registering shares under the ADC/Altitun Stock Option Plan;
13.	Form S-8 (No. 333-40354) registering shares under the ADC/PairGain 1993 Stock Option Plan, the ADC/PairGain 1996 Stock Option Plan and the ADC/PairGain Directors Stock Option Plan;
14.	Form S-8 (No. 333-42642) registering shares under the ADC/Centigram 1997 Stock Option Plan and the ADC/Centigram 1995 Nonstatutory Stock Option Plan;
15.	Form S-8 (No. 333-47656) registering shares under the ADC/BAS Stock Plan;
16.	Form S-8 (No. 333-56356) registering shares under the ADC Telecommunications, Inc./CommTech Corporation 1997 Equity Incentive Plan and a nonqualified option agreement;
17.	Form S-8 (No. 333-61488), as amended, registering shares under the 401(k) Excess Plan (2001 Restatement);
18.	Form S-8 (No. 333-61490) registering shares under the Retirement Savings Plan and the 401(k) Supplemental Retirement Plan;
19.	Form S-8 (No. 333-83418) registering shares under the 2001 Special Stock Option Plan;
20.	Form S-8 (No. 333-83420) registering shares under the Global Employee Stock Purchase Plan;
21.	Form S-8 (No. 333-148176) registering shares under the ADC/LGC Wireless, Inc. 2007 Stock Plan;
22.	Form S-8 (No. 333-150214) registering shares under the 2008 Global Stock Incentive Plan;
23.	Form S-8 (No. 333-164819) registering shares under the 2010 Global Stock Incentive Plan;
24.	Form S-3 (No. 033-59445) pertaining to the offering by ADC Telecommunications, Inc. of 5,500,000 shares;
25.	Form S-3s (Nos. 333-02133, as amended, 333-07309, as amended, 333-15283, as amended, 333-25241, 333-37419, as amended, 333-37900, 333-

	47590, 333-56418, as amended, and 333-108245, as amended) registering shares to be sold by certain selling shareholders;
26.	Form S-3 (No. 333-32023) registering shares to be issued upon exercise of options initially granted under the 1991 Stock Incentive Plan and the Nonemployee Director Stock Option Plan and thereafter transferred to unaffiliated third parties;
27.	From S-3s (Nos. 333-94977 and 333-91972, as amended) registering shares under the Direct Stock Puchase Plan;
28.	Form S-3 (No. 333-108247), as amended, registering 1.00% Convertible Subordinated Notes Due 2008, Floating Rate Convertible Subordinated Notes Due 2013 and shares of common stock issuable upon conversion of the notes; and
29.	Form S-3 (No. 333-148137) registering 3.50% Convertible Preferred Notes Due 2015, 3.50% Convertible Subordinated Notes Due 2017 and shares of common stock issuable upon conversion of the notes.

     IN WITNESS WHEREOF, each of the undersigned has executed this Power of Attorney, which may be signed in one or more counterparts, which taken together shall constitute one and the same Power of Attorney, as of December 9, 2010:

Signature	Title
/s/ Alan Clarke	President
Alan Clarke	(principal executive officer)
/s/ Mario Calastri	Vice President and Assistant Treasurer
Mario Calastri	(principal financial officer)
/s/ Steven G. Nemitz	Vice President and Controller
Steven G. Nemitz	(chief accounting officer)
/s/ Harold G. Barksdale	Director
Harold G. Barksdale
/s/ Mario Calastri	Director
Mario Calastri
/s/ Richard J. Suminski	Director
Richard J. Suminski