ADC Telecommunications
    
    
    
    Exhibit 12.1Ratio of Earnings to Fixed ChargesInstructions to Paragraph 503(d)  SEC Handbook(in millions)
 Fiscal Year2010
    
    
    2009
    
    
    2008
    
    
    2007
    
    
    2006EarningsIncome (loss) before income taxes
    
    $
    85.6
    
    
    $
    (456.0
    )
    
    $
    (33.9
    )
    
    $
    128.3
    
    
    $
    56.7ADD+ Adjustment for minority interests
in consolidated subsidiaries
    
    $
    
    
    
    $
    
    
    
    
    
    
    
    
    
    
    
    
    + Income or loss from equity investees
    
    $
    
    
    
    $
    
    
    
    
    
    
    
    
    (0.1
    )
    
    
    (0.5
    )+ Fixed Charges
    
    $
    29.0
    
    
    $
    28.0
    
    
    
    31.3
    
    
    
    19.8
    
    
    
    18.6+ 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
    
    
    114.6
    
    
    
    (428.0
    )
    
    
    (2.6
    )
    
    
    148.0
    
    
    
    74.8SUBTRACT- Interest Capitalized
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    - Preference security dividend
requirements of consolidated
subsidiaries
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    - Minority interest in pre-tax income of
subsidiaries that have not incurred
fixed charges
    
    
    1.3
    
    
    
    1.3
    
    
    
    0.7
    
    
    
    (1.5
    )
    
    
    (1.1
    )Sub-total
    
    
    1.3
    
    
    
    1.3
    
    
    
    0.7
    
    
    
    (1.5
    )
    
    
    (1.1
    )Total Earnings
    
    $
    115.9
    
    
    $
    (426.7
    )
    
    $
    (1.9
    )
    
    $
    146.5
    
    
    $
    73.7Fixed ChargesInterest Expensed
    
    $
    25.5
    
    
    $
    24.1
    
    
    $
    26.0
    
    
    $
    14.8
    
    
    $
    14.3Interest Capitalized
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    Amortized premiums, discounts &
capitalized expenses related to
indebtedness
    
    
    1.8
    
    
    
    1.7
    
    
    
    2.2
    
    
    
    1.5
    
    
    
    1.5Interest Within Rental Expense
    
    
    1.7
    
    
    
    2.2
    
    
    
    3.1
    
    
    
    3.5
    
    
    
    2.8Preference Security Dividend Requirements
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    Total Fixed Charges
    
    $
    29.0
    
    
    $
    28.0
    
    
    $
    31.3
    
    
    $
    19.8
    
    
    $
    18.6Ratio of Earnings to Fixed Charges
    
    
    4.0
    
    
    
    (15.2
    )
    
    
    (0.1
    )
    
    
    7.4
    
    
    
    4.0Deficiency of Earnings to Fixed Charges