Super Micro Computer has become an important player in the artificial intelligence (AI) boom. The California company, commonly called Supermicro, builds servers containing high-powered chips used to run AI applications. Rapid demand for AI infrastructure has helped produce enormous growth. Yet some of the most important questions surrounding Supermicro have little to do with AI. Instead, they involve a fundamental business issue: Can stakeholders rely on the systems a company uses to produce its financial information?

Supermicro has spent more than a year trying to correct material weaknesses in its internal controls over financial reporting. This shows why accounting involves much more than recording sales and expenses. Businesses also need systems that help ensure transactions are recorded properly, financial statements are accurate, and errors or inappropriate activity can be identified before they create larger problems.

What Are Internal Controls?

Internal controls are the policies and procedures a business uses to help safeguard its assets, produce reliable financial information, comply with applicable requirements, and reduce the chances that mistakes or inappropriate transactions will go undetected. For example, companies may separate responsibilities so that one employee cannot authorize, record, and approve the same transaction, and managers may be required to review certain transactions. Accounting systems can also flag unusual activity and require additional approvals.

These controls ultimately affect the accounting information provided to managers, investors, lenders, government agencies, and other stakeholders. Financial statements are useful only when people have confidence that the information behind them was collected and reported appropriately. A particularly serious problem occurs when a company identifies a material weakness in its internal control over financial reporting. Such a weakness means there is a reasonable possibility that a material error in the company's financial statements would not be prevented or detected promptly. For Supermicro, resolving those weaknesses has proved difficult.

Internal Control at Supermicro

Supermicro's relationship with its auditors became a major issue in October 2024 when Ernst & Young (EY) resigned as its auditor. During its audit, EY raised concerns involving corporate governance and internal controls. EY said it was unwilling to remain associated with financial statements prepared by management and indicated that it could no longer rely on certain representations from management and the audit committee. 

In mid-November, Supermicro hired BDO USA as its auditor and eventually filed delayed financial reports with the Securities and Exchange Commission. At the time, there was a possibility that the SEC could delist or suspend trading in Supermicro stock if the financial reports were not filed in time. Fortunately, the SEC granted an extension. 

In its opinion covering fiscal 2025, BDO again concluded that the company had not maintained effective internal control over financial reporting. Supermicro said it’s making progress. Its remediation effort includes changes to the segregation of duties, redesign of enterprise resource planning systems, expanded review procedures, stronger compliance programs, and personnel changes in finance and compliance. Supermicro has said the new controls must operate for a sufficient period and be tested before management can conclude that they are effective.

Supermicro's experience demonstrates the importance of independent auditing. Public companies rely on outside auditors to examine financial reporting and provide an independent assessment. The auditor’s role is to gather evidence and determine whether the financial statements and related reporting meet applicable accounting standards. 

Why Reliable Accounting Systems Matter

Accounting problems do not remain confined to the accounting department. Delayed financial reports can create problems with securities exchanges. Questions about internal controls can affect investor confidence. Management may have to spend substantial time and money redesigning systems, hiring employees, working with auditors, and testing new procedures. The company may also find it more difficult to recruit people for important financial positions.

Accounting information begins with thousands or even millions of individual transactions. Those transactions must move through systems that record, classify, review, and ultimately summarize them. Management must establish controls throughout that process, while auditors evaluate whether the resulting financial information can be relied upon. For a rapidly growing company, those systems can become even more important. 

Supermicro may be best known for the powerful computer servers that help run AI systems, but its continuing efforts to repair its financial controls provide a different lesson for business students. Financial statements are the end product of an accounting process. Confidence in those statements depends not only on the numbers reported, but also on the people, procedures, technology, and controls used to produce them. 

In the Classroom

This article can be used to discuss internal controls, auditing, financial statements, cash flow, and the reliability of accounting information (Chapter 14: Accounting and Financial Statements).

Discussion Questions

  1. What is a material weakness in internal control over financial reporting, and why can it create problems for a company?

  2. What steps has Supermicro taken to try to correct its internal-control weaknesses? 

  3. What role did Supermicro's outside auditors play in identifying concerns about the company's financial reporting controls?

This article was developed with the support of Kelsey Reddick for and under the direction of O.C. Ferrell, Linda Ferrell, and Geoff Hirt.