Super Micro Computer completed its investigation into an alleged scheme from earlier this year, in which two employees and a contractor were said to have smuggled high-end Nvidia chips to China.

The server maker on Thursday said a team led by independent members of its board reviewed the transactions that were the subject of a federal indictment and didn't find evidence that any current member of Super Micro's senior management team had knowledge of the alleged diversion scheme, or of any actual diversion of restricted products.

The finding comes after Super Micro co-founder Yih-Shyan "Wally" Liaw resigned from the company in March, as he was one of the people indicted for his alleged role in the scheme.

The alleged scheme - which involved billions of dollars of servers and dummy devices used to deceive an American inspector - also resulted in Super Micro placing a second employee on leave and firing a contractor.

Super Micro on Thursday said its investigation into the matter additionally didn't find any evidence that the company directly sold export-controlled products to known restricted parties or locations, nor evidence that its previously issued financial statements can't be relied upon due to the potential diversion of restricted products.

The company said it took several personnel actions with respect to employees within its sales, technical support and business development functions, including terminations, for failure to follow company policies or the company's code of conduct.

Taking recommendations from the investigation team - which was led by Scott Angel, the company's lead independent director, and Tally Liu, the chair of the board's audit committee - Super Micro said it has taken steps to further enhance its export compliance program.

"We are pleased to report the conclusion of this independent investigation," Angel said. "The independent directors support the actions the company has already taken to bolster its internal policies and procedures, as well as the additional enhancements that will be implemented."