CSP INC MA

Report of Independent Registered Public Accounting Firm

Shareholders and the Board of Directors

CSP Inc. and Subsidiaries

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of CSP Inc. and Subsidiaries (the Company) as of September 30, 2024 and 2023, the related consolidated statements of operations, comprehensive income, shareholders’ equity and cash flows for the years then ended, and the related notes to the consolidated financial statements (collectively, the financial statements). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of September 30, 2024 and 2023, and the results of their operations and their cash flows for the years then ended, in conformity with accounting principles generally accepted in the United States of America.

Basis for Opinion

These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current period audit of the financial statements that was communicated or required to be communicated to the audit committee and that (1) relate to accounts or disclosures that are material to the financial statements, and (2) involved our especially challenging, subjective, or complex judgments. The communication of the critical audit matter does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Revenue Recognition - Gross Versus Net Presentation

As described in Note 1 to the financial statements, the Company recognizes revenue from third-party service contracts as either gross sales or net sales depending on whether the Company is acting as a principal party to the transaction or simply acting as an agent or broker. The Company records revenue as gross when the

Company is a principal party to the arrangement and net of cost when they are acting as a broker or agent. The Company has concluded that it is the agent in sales of third-party maintenance, software or hardware support, and certain security software that is sold with integral third-party delivered software maintenance that include critical updates.

We identified the Company’s accounting for revenue from third-party service contracts described above to be a critical audit matter due to the significant judgments used by management related to the evaluation of the principal versus agent considerations. Auditing management’s assumptions and conclusions involved a high degree of auditor judgment.

Our audit procedures related to these contracts included the following, among others:

/s/RSM US LLP

We have served as the Company's auditor since 2007.

Coral Gables, Florida

December 20, 2024