(1)

Manufacturing profit in acquired inventory results from purchase accounting entries to increase the value of inventory acquired to its fair value. As the acquired inventory is sold, the associated manufacturing profit in acquired inventory increases cost of goods sold and reduces gross profit. Management believes it is useful to exclude manufacturing profit in acquired inventory as it does not reflect continuing operations of acquired entities and to facilitate comparability of gross profit between periods. In addition, management excludes the impact of manufacturing profit in acquired inventory in internal measurements of gross profit.

(2)

Restructuring, severance and other special charges consists of facility consolidation and equipment charges, severance and other costs related to the consolidation of operations and strategic discontinuation of products. Facilities consisted of manufacturing sites, as well as sales, engineering and administrative space. Other special charges also include gains or losses on litigation, net of settlement costs, primarily related to acquisition-related matters.

As the operations and products referred to above are not expected to have a continuing contribution to operations or they are expected to have a diminishing contribution during the transition phase, management believes excluding such items from Microsemi's operations is useful to investors as it provides a means of evaluating Microsemi's on-going operations. Management believes that utilizing non-GAAP financial measures that exclude these items is useful in providing an alternate measure to evaluate core operating activities and management excludes these items in its evaluation of operations and for strategic decision making, forecasting future results and evaluating current performance.

(3)

Amortization of acquisition related intangible assets is excluded from internal analysis of Microsemi's operations and management does not view this non-cash expense as reflective of the business' current performance. Management believes that utilizing non-GAAP financial measures that exclude this non-cash item is useful in providing an alternate measure that excludes the variability caused by purchase accounting factors.

(4)

Stock based compensation is excluded by management when evaluating operating activities and for strategic decision making, forecasting future results and evaluating current performance. Management believes that utilizing non-GAAP financial measures that exclude this non-cash item is useful in providing an alternate measure that excludes the variability caused by different methodologies and subjective assumptions used in the valuation of equity awards across different companies.

(5)

Acquisition costs for business combinations are expensed as incurred, in accordance with relevant accounting guidance, rather than capitalized into the purchase price of an acquisition. Management excludes these expenses when evaluating operating activities and for strategic decision making, forecasting future results and evaluating current performance. Management believes that utilizing non-GAAP financial measures that exclude this item is useful in providing an alternate measure that excludes the variability caused by purchase accounting factors.

(6)

Debt issuance and refinancing costs have been excluded as they are discrete charges we incurred to issue or refinance our credit facility. Management excludes these expenses from internal measurements of credit facility interest rates and in evaluating current performance. Management believes that utilizing non-GAAP financial measures that exclude these items is useful in providing an alternate measure that is reflective of the ongoing characteristics of the amended credit facility. Changes in the fair value of interest rate swaps are non-cash amounts that management excludes from internal measurements and from forecasting future results. We entered into interest rate swaps as a cash flow hedge on our variable rate term loan, but as these swaps did not qualify for hedge accounting, we record gains and losses for the change in fair value. Management excludes these gains and losses from internal measurements and in evaluating current performance. Management believes that utilizing non-GAAP financial measures that exclude these items is useful in providing an alternate measure that excludes these non-cash fair value adjustments that do not reflect ongoing operations.

(7)

The tax effect of non-GAAP adjustments represents the difference in the provision for income taxes that resulted from non-GAAP adjustments to pretax income and also certain acquisition related and nondeductible stock based compensation items, and non-cash valuation allowance charges and releases related to deferred tax assets. These amounts are excluded as non-GAAP adjustments as the restructuring activities and acquisitions are not viewed by management as being reflective of the business' ongoing tax position.