**ADC Telecommunications  Ratio of Earnings to Fixed Charges  Instructions to Paragraph 503(d) - SEC Handbook**

|                           |                                                                                                                                  |                                                         | Fiscal      Year Ended October 31 |
|--------------------------------|---------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------|-----------------------------------|
|                           |                                                                                                                                  |                                                         | 2004                              |   | 2003 |   | 2002 |   | 2001 |   | 2000 |
| **Earnings**                   |                                                                                                                                  |                                                         |                              |   |   |   |   |   |   |   |   |   |
|       | Income      (loss) before income taxes                                                                                                |            | $33.2                             |       | $(47.9 | ) |       | $(731.9 | ) |       | $(1,719.5 | ) |       | $1,626.1 |
|                           |                                                                                                                                  |                                                         |                              |   |   |   |   |   |   |   |   |   |   |   |
| **ADD**                        |                                                                                                                                  |                                                         |                              |   |   |   |   |   |   |   |   |   |
|                           | + Adjustment      for minority interests in consolidated subsidiaries or income or loss from      equity investees                    |                                                         | —                            |   | — |   |   | 2.6 |   |   | 9.7 |   |   | — |
|                           | + Fixed      Charges                                                                                                                  |                                                         | 14.7                              |   | 7.2 |   |   | 9.7 |   |   | 16.2 |   |   | 7.9 |
|                           | + Distributed      income of equity investees                                                                                         |                                                         | —                            |   | — |   |   | — |   |   | — |   |   | — |
|                           | + ADC's      share of pre-tax losses of equity investees for which charges arising from      guarantees are included in fixed charges |                                                         | —                            |   | — |   |   | — |   |   | — |   |   | — |
|                           | Sub-total                                                                                                                             |                                                         | 47.9                              |   | (40.7 | ) |   | (719.6 | ) |   | (1,693.6 | ) |   | 1,634.0 |
| **SUBTRACT**                   |                                                                                                                                  |                                                         |                              |   |   |   |   |   |   |   |   |   |
|                           | - Interest      Capitalized                                                                                                           |                                                         | —                            |   | — |   |   | — |   |   | — |   |   | — |
|                           | - Preference      security dividend requirements of consolidated subsidiaries                                                         |                                                         | —                            |   | — |   |   | — |   |   | — |   |   | — |
|                           | - Minority      interest in pre-tax income of subsidiaries that have not incurred fixed      charges                                  |                                                         | —                            |   | — |   |   | — |   |   | — |   |   | — |
|                           | Sub-total                                                                                                                             |                                                         | —                            |   | — |   |   | — |   |   | — |   |   | — |
|                           | Total      Earnings                                                                                                                   |                                                         | $47.9                             |   | $(40.7 | ) |   | $(719.6 | ) |   | $(1,693.6 | ) |   | $1,634.0 |
| **Fixed      Charges**         |                                                                                                                                  |                                                         |                              |   |   |   |   |   |   |   |   |   |
|                           | Interest      Expensed                                                                                                                |                                                         | $8.8                              |   | $3.6 |   |   | $2.4 |   |   | $8.8 |   |   | $4.1 |
|                           | Interest      Capitalized                                                                                                             |                                                         | —                            |   | — |   |   | — |   |   | — |   |   | — |
|                           | Amortized      premiums, discounts & capitalized expenses related to indebtedness                                                     |                                                         | 1.6                               |   | 0.6 |   |   | — |   |   | — |   |   | — |
|                           | Interest      Within Rental Expense                                                                                                   |                                                         | 4.3                               |   | 3.0 |   |   | 7.3 |   |   | 7.4 |   |   | 3.8 |
|                           | Preference      Security Dividend Requirements                                                                                        |                                                         | —                            |   | — |   |   | — |   |   | — |   |   | — |
|                           | Total      Fixed Charges                                                                                                              |                                                         | $14.7                             |   | $7.2 |   |   | $9.7 |   |   | $16.2 |   |   | $7.9 |
|                           |                                                                                                                                  |                                                         |                              |   |   |   |   |   |   |   |   |   |   |   |
|                           | **Ratio      of Earnings to Fixed Charges**                                                                                           |                                                         | 3.3                               |   | (5.7 | ) |   | (74.2 | ) |   | (104.5 | ) |   | 206.8 |
|                           | **Deficiency      of Earnings to Fixed Charges**                                                                                      |                                                         |                              |   | $47.9 |   |   | $729.3 |   |   | $1,709.8 |   |   |   |