USITC Receives Complaint Concerning Power Converters and Computing Systems

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On January 12, 2026, the U.S. International Trade Commission (USITC) received a new complaint. This complaint is titled “Certain Power Converters, Circuit Board Assemblies, and Computing Systems Containing the Same,” Docket Number 3874.

The complaint was filed by Vicor Corporation. The company claims that certain products were imported, sold for importation, or sold in the United States after importation in violation of section 337 of the Tariff Act of 1930 (19 U.S.C. 1337).

The products in question include power converters, circuit board assemblies, and computing systems that use these items.

The complaint names several companies as respondents:

  • Delta Electronics, Inc. (Taiwan)
  • Delta Electronics (Americas) Ltd. (Fremont, California)
  • DET Logistics (USA) Corporation (Fremont, California)
  • Luxshare Precision Industry Co., Ltd. (China)
  • Dongguan Luxshare Technology Co., Ltd., a.k.a. Luxshare-Tech (China)
  • Shanghai Peiyuan Electronics Co., Ltd. d/b/a MetaPWR Electronics Co., Ltd., and Shanghai MetaPWR Electronics Co., Ltd. (China)
  • Monolithic Power Systems, Inc. (Kirkland, Washington)
  • Chengdu Monolithic Power Systems Co., Ltd. (China)
  • MPS International (Shanghai) Ltd. (China)
  • Wistron Corporation (Taiwan)
  • Wiwynn Corporation (Taiwan)
  • Quanta Computer Inc. (Taiwan)
  • Quanta Cloud Technology Inc. (Taiwan)
  • Quanta Cloud Technology USA LLC (San Jose, California)
  • Quanta Computer USA Inc. (Fremont, California)

Vicor Corporation is asking the Commission to issue a limited exclusion order and cease and desist orders. Vicor also requests that the Commission impose a bond during the 60-day Presidential review period.

The USITC is asking for comments from the public on any public interest issues related to the complaint. The focus is on:

  • How the products identified are used in the United States.
  • Any concerns about public health, safety, or welfare if the requested orders are issued.
  • Identification of similar products made in the United States that could replace the disputed items.
  • Whether Vicor, its partners, or other suppliers in the U.S. can meet the demand if the imported products are excluded.
  • How U.S. consumers may be affected by the requested remedial orders.

Anyone who wants to submit comments must do so electronically within eight days after publication of the notice. Submissions must reference “Docket No. 3874” and be no longer than five pages. Only electronic filings are allowed at this time. Guidance can be found on the USITC’s Electronic Document Information System (EDIS): https://edis.usitc.gov.

Those who want to keep some information confidential must follow the procedures set out in 19 CFR 201.6. Confidential documents can only be reviewed by the Commission and certain authorized personnel.

The USITC will provide other opportunities for comments if a final initial determination is made in the investigation. Replies to any comments must be filed within three days after the comments are due.

This notice is filed under the authority of section 337 of the Tariff Act of 1930 and the Commission’s rules.

For more details, refer to the official notice at the Federal Register or contact Lisa R. Barton, Secretary to the Commission, at the USITC in Washington, DC.


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