Short answer: The United States did not create a simple worldwide ban making every use of every Huawei chip automatically illegal. On May 13, 2025, the Commerce Department’s Bureau of Industry and Security (BIS) warned that using certain Huawei Ascend processors—including the 910B, 910C and 910D—may violate the Export Administration Regulations (EAR), particularly General Prohibition 10 (GP10).
The warning matters globally because the EAR can apply outside the United States to U.S.-origin items, certain foreign-made products and transactions involving controlled technology. But GP10 generally turns on more than the chip’s brand or location: the person must have the required knowledge that an export-control violation occurred, is occurring or is intended in connection with the item.
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What BIS actually announced
BIS issued three related actions on May 13, 2025:
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Guidance on GP10: BIS explained how the existing prohibition could apply to certain Chinese advanced-computing integrated circuits, including named Huawei Ascend processors.
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Anti-diversion industry guidance: BIS warned companies about efforts to divert advanced-computing chips and systems containing them, and recommended stronger due diligence.
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A broader AI-chip policy announcement: The Commerce Department announced the rescission of the Biden-era AI Diffusion Rule and said replacement controls would follow.
The primary BIS guidance said the listed chips were “likely developed or produced in violation” of U.S. export controls. That is an agency assessment for enforcement and compliance purposes—not the same thing as a court judgment establishing every detail of a particular chip’s manufacturing history.
BIS’s guidance is also not best described as a newly enacted statute or a blanket prohibition on all Huawei products. It is guidance on applying an existing EAR general prohibition to particular facts.
Which Huawei chips are named?
The illustrative list identifies:
- Huawei Ascend 910B
- Huawei Ascend 910C
- Huawei Ascend 910D
The BIS document appears to spell the third product “Ascent 910D” in one place. The commonly used Huawei product name is Ascend 910D; readers checking a compliance record should compare the exact model and documentation rather than relying only on a headline or informal spelling.
BIS says the list is illustrative and non-exhaustive. An unlisted chip is not automatically safe, and a product’s model name alone does not resolve whether GP10 applies.
GP10 in plain English
GP10 is found in 15 C.F.R. § 736.2(b)(10). In relevant part, it prohibits a person from dealing with an item subject to the EAR when that person knows the item was, or will be, exported in connection with an EAR violation.
The rule covers much more than shipping a chip across a border. Depending on the facts, covered conduct can include:
- Buying or ordering the item
- Using or storing it
- Selling, transferring or disposing of it
- Exporting, reexporting, transporting or forwarding it
- Financing the transaction
- Loaning or servicing the item
That breadth explains why BIS warned data-center operators, cloud companies, resellers and other businesses—not only manufacturers and exporters.
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Why knowledge is crucial
“Knowledge” is the dividing line that sensational headlines often omit. Merely encountering an Ascend-powered server does not automatically prove that its operator violated U.S. export controls.
The analysis can depend on what the company knew, what it had reason to know, what its supplier disclosed, whether red flags were ignored, whether the item is subject to the EAR, and whether an authorization or other legal basis applies. A documented compliance process is not a guaranteed safe harbor, but it can demonstrate how the company addressed the risk.
Why the issue can have worldwide consequences
“Worldwide” describes the potential reach of the EAR, not a universal criminal law governing every person and every Huawei product on Earth.
U.S.-origin items can remain subject to the EAR wherever they are located. Certain foreign-produced items can also become subject to U.S. controls through rules such as the de minimis and foreign direct product rules. Those rules can apply when foreign-made products incorporate specified U.S.-origin content or are produced using certain U.S. technology, software or equipment.
BIS provides background on EAR jurisdiction and foreign-produced items. A U.S. government compliance note on foreign persons also explains why foreign companies cannot assume that operating outside the United States removes all export-control exposure.
The practical question is therefore not simply “Is this a Huawei chip?” It is closer to: What exactly is the item, how was it made, where and by whom was it transferred, what U.S. controls attach, and what did the relevant parties know?
What ECCN 3A090 has to do with the warning
BIS’s guidance discusses Chinese advanced-computing integrated circuits that meet the technical parameters of ECCN 3A090. An ECCN is an Export Control Classification Number used to identify items on the Commerce Control List.
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ECCN 3A090 is not shorthand for “all Huawei chips,” nor does it independently answer every GP10 question. A chip’s technical characteristics, its classification, its jurisdiction and the facts surrounding its production and transfer all matter. A complete server, accelerator board or assembly may have additional classification issues separate from the bare integrated circuit.
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Is merely using an Ascend server illegal?
Not automatically on the information available in the BIS warning.
BIS said use of the named and qualifying chips may implicate GP10 and could expose companies to enforcement action when the rule’s conditions are met. That is a serious compliance warning, but it is not the same as saying that every individual or company operating any Ascend-powered machine has already violated U.S. law.
Risk is generally higher when:
- The hardware is a named Ascend model.
- The supplier or manufacturing chain is opaque.
- The company has been told that restricted U.S. technology, software, equipment or a restricted foundry was involved.
- The business resells, transfers, repairs, finances or provides access to the hardware.
- The customer, owner or intermediary is a restricted party or has a prohibited end use.
- The company has received a BIS warning, inquiry, subpoena or other notice.
- The operator cannot establish the chip model, supplier, provenance or system configuration.
Risk may be lower where the company has no reason to believe an EAR violation occurred, has performed meaningful supplier and counterparty diligence, and has documented why the item and activity are outside the relevant prohibition. That is not a legal safe harbor; material deployments should be reviewed by qualified export-control counsel.
How the warning affects common business arrangements
Cloud computing
A cloud provider may not be able to treat a covered accelerator as an ordinary commodity if it provides access, maintenance, storage, technical support or other services involving the system. Responsibility may be divided among the chip owner, data-center operator, cloud provider, contractor and customer.
Moving a workload to a third-party cloud can shift some hardware responsibilities, but it does not automatically eliminate the customer’s own obligations or resolve prohibited-end-user and prohibited-end-use concerns.
Colocation
A company renting rack space may not own the servers or know their manufacturing history. Contracts should address asset identification, supplier representations, customer screening, maintenance access and escalation when new information creates a compliance concern.
Resale and refurbishment
Continuing to operate an installed machine, selling it, moving it across borders and servicing it are different activities with different facts. A company that decides to decommission hardware must still consider whether disposal, resale, shipment or refurbishment creates a separate export-control issue.
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A non-U.S. subsidiary is not automatically subject to every obligation that applies to a U.S. company. However, shared personnel, U.S.-origin software or technology, financing, procurement, technical support and management controls can create additional exposure for the subsidiary or its parent.
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Mixed hardware clusters
A cluster combining Ascend accelerators with NVIDIA, AMD or other hardware can raise separate questions about remote administration, data movement, customer access, software, system classification and model-training activity. The presence of other chips does not erase the need to examine the Ascend components.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.A practical compliance checklist
This is general information, not legal advice. Organizations with material exposure should use it as an intake checklist for professional review.
- Inventory the hardware. Record the exact chip, accelerator card, board, server and system supplier.
- Confirm the model. Determine whether the equipment contains an Ascend 910B, 910C, 910D or another advanced-computing processor.
- Establish provenance. Document the seller, reseller, owner, manufacturing location, shipment route and installation date.
- Review controlled inputs. Investigate whether U.S.-origin software, technology, semiconductor equipment or other EAR-controlled inputs were involved in production.
- Screen counterparties. Review suppliers, intermediaries, owners, resellers, contractors, customers and end users.
- Assess red flags. Pay attention to opaque ownership, unexplained routing, unusual payment structures, false or incomplete documentation and requests to conceal the end user.
- Assess knowledge. Record what the company knew, when it learned it and how it responded to warnings or inconsistencies.
- Pause high-risk activity. Consider suspending transfers, resale, servicing or new customer access while the review is pending.
- Preserve records. Keep supplier representations, screening results, technical records, communications and the reasoning behind the decision to continue, restrict or stop activity.
- Escalate appropriately. Consult export-control counsel or a qualified trade-compliance specialist before a material purchase, transfer, service arrangement or cloud deployment.
BIS’s advanced-computing-chip diversion guidance provides additional due-diligence considerations and red flags.
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Financial consequences for companies
BIS warned that unauthorized activity covered by GP10 could result in substantial administrative and criminal penalties. The financial impact can extend beyond a government penalty:
- Hardware may need to be quarantined, migrated or replaced.
- AI workloads may be interrupted, creating service-level and customer costs.
- Resale, insurance, financing and banking relationships may become more difficult.
- Customers may demand additional representations, audits or indemnities.
- Investors and boards may require a broader supply-chain investigation.
- Legal, technical and forensic review can be expensive even when no violation is ultimately established.
Immediate decommissioning can reduce some exposure but may create operational disruption and separate transfer or disposal questions. Continuing to operate can preserve sunk investment while increasing the consequences of ignored warning signs. The financially sensible decision depends on the hardware’s provenance, the business model, the customers involved and the strength of the company’s compliance evidence.
What the guidance does not establish
- It does not ban every Huawei product worldwide.
- It does not establish that every person using an Ascend chip has violated U.S. law.
- It does not make every unlisted Chinese chip automatically prohibited.
- It does not eliminate the need for item-, transaction-, jurisdiction-authorization- and knowledge-specific analysis.
- It does not publicly prove, chip by chip, every alleged manufacturing violation.
- It does not mean that outsourcing the hardware to a cloud provider automatically solves the problem.
The broader AI-chip policy context
The Ascend warning appeared alongside a broader U.S. effort to limit diversion of advanced computing technology and address concerns about Chinese AI training and inference. The Commerce Department’s announcement paired the GP10 guidance with anti-diversion measures and the rescission of the Biden-era AI Diffusion Rule, while stating that replacement controls would be developed.
That context is important, but it should not be confused with the legal mechanism of the Ascend warning. The immediate issue for an operator is the application of GP10 and other potentially relevant EAR rules to a particular item and transaction.
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Read the Commerce Department announcement.
Bottom line for operators and buyers
The most accurate description is this: BIS warned that using specified Huawei Ascend processors may implicate the existing GP10 prohibition because the agency believes they were likely developed or produced in violation of U.S. export controls. The warning can reach companies outside the United States, but it is not a simple nationality-based worldwide ban on every Huawei chip or an automatic finding that every user is liable.
Companies should identify the exact hardware, investigate its provenance, screen the relevant parties, document what they knew and obtain professional advice before purchasing, transferring, servicing, reselling or offering access to named Ascend systems.
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