{"schema_version":1,"citation_url":"https://567business.com/news/microsoft-chinese-optical-transceiver-ban-ai-data-centers","title":"Microsoft has 169 US data centers in the works. It's fighting a ban on the Chinese parts that wire AI chips","description":"China makes about two-thirds of the transceivers that link AI chips. Washington fears spying; Microsoft and a tech lobby warn a ban could stall the build-out.","author":"Patrick Karsh","publisher":"567 Business","date_published":"2026-11-11T00:06:24.116462Z","date_modified":"2026-11-11T00:06:46.836779Z","body_markdown":"Microsoft is pressing the Trump administration to drop a planned ban on new Chinese optical transceivers, the small parts that link AI chips inside data centers, [Reuters reported](https://www.investing.com/news/stock-market-news/exclusivemicrosoft-presses-trump-to-scuttle-expected-ban-on-chinese-data-center-technology-5014745) on Tuesday, citing three people familiar with the matter. The company has 35 US data centers under construction and 134 more planned, according to the tracker Cleanview. That is 169 sites in the works. Chinese makers supply about two-thirds of the world's transceivers, per [Tom's Hardware](https://www.tomshardware.com/tech-industry/policy/microsoft-lobbies-against-potential-ban-on-chinese-optical-networking-gear-for-ai-data-centers-as-fcc-mulls-restricting-imports-industry-group-says-move-could-grind-data-center-rollout-to-a-halt).\n\nMicrosoft declined to comment to Reuters. The White House and the Federal Communications Commission did not respond right away.\n\n![Representative photo: a QSFP optical transceiver taken apart, showing the circuit board and fiber that carry data as light](https://pub-fac99da959e344fe99d810d309cef7df.r2.dev/photos/article/9314889a-562c-4465-bd98-8422794c2da5/4b77ea35c01dce51e703529c9e543ca2.jpg)\n\n## The fight: security fears against build speed\n\nThe worry in Washington is spying. Officials fear Chinese transceivers could be used by Beijing to \"steal data, install malware or disrupt service at US data centers,\" [Reuters reported](https://www.investing.com/news/stock-market-news/exclusivemicrosoft-presses-trump-to-scuttle-expected-ban-on-chinese-data-center-technology-5014745). Reuters first reported the drafting of a ban [in August](https://www.reuters.com/world/trump-administration-drafting-ban-chinese-data-center-devices-sources-say-2026-08-04/). The FCC, which oversees US telecom gear, is working on it.\n\nThe worry in the industry is time. Microsoft is one of a group of companies and trade groups telling the administration that a ban could \"irreparably damage\" the US lead over China in AI by slowing the build-out further, the sources said. In September, Microsoft was among a handful of firms that met officials from the White House Office of Science and Technology Policy and the National Security Council to flag the supply problem.\n\nJohn Miller of the Information Technology Industry Council, a tech lobby group, did not soften it. A ban \"really threatens to arguably grind (the data center rollout) to a halt,\" he told Reuters.\n\n## Why a cheap part can strand billions in chips\n\nAn optical transceiver turns electrical signals into pulses of light and back again. That lets data move over fiber between servers, switches and racks of AI chips. Fiber is faster than copper, uses less power and runs cooler, [Tom's Hardware explained](https://www.tomshardware.com/tech-industry/policy/microsoft-lobbies-against-potential-ban-on-chinese-optical-networking-gear-for-ai-data-centers-as-fcc-mulls-restricting-imports-industry-group-says-move-could-grind-data-center-rollout-to-a-halt). Some data centers need millions of them.\n\nMiller's point is that the chips are already bought. Without transceivers, those chips \"literally could just sit there waiting around un-utilized,\" he told [Reuters](https://www.investing.com/news/stock-market-news/exclusivemicrosoft-presses-trump-to-scuttle-expected-ban-on-chinese-data-center-technology-5014745).\n\n```chart\ntype: column\ntitle: Microsoft data centers in the US, by stage\nsource: [Reuters via Investing.com, citing Cleanview](https://www.investing.com/news/stock-market-news/exclusivemicrosoft-presses-trump-to-scuttle-expected-ban-on-chinese-data-center-technology-5014745)\nnote: As reported November 10, 2026\n---\nStage | Data centers\nUnder construction | 35\nPlanned | 134\n```\n\nCutting off Chinese supply would remove more than half of the world's output, by [Tom's Hardware's](https://www.tomshardware.com/tech-industry/policy/microsoft-lobbies-against-potential-ban-on-chinese-optical-networking-gear-for-ai-data-centers-as-fcc-mulls-restricting-imports-industry-group-says-move-could-grind-data-center-rollout-to-a-halt) math. That would land on an industry already short of parts.\n\n## A possible way out: ban only the next generation\n\nThe ban may be narrower than the headline. In an October client note, Morgan Stanley said the administration was weighing a ban on Chinese transceivers that handle 3.2 terabits of data per second, per [Reuters](https://www.investing.com/news/stock-market-news/exclusivemicrosoft-presses-trump-to-scuttle-expected-ban-on-chinese-data-center-technology-5014745). Two of Reuters' sources said that cutoff is under consideration.\n\nThose 3.2-terabit parts are not expected to ramp up until 2028, with wide use in 2029. A ban aimed only at them would spare the parts going into today's builds. It would also give US makers time to add capacity, and avoid a clash with both US companies and Beijing.\n\n```diagram\ntype: timeline\ntitle: How the transceiver ban fight unfolded\nsource: [Reuters, August](https://www.reuters.com/world/trump-administration-drafting-ban-chinese-data-center-devices-sources-say-2026-08-04/), [Reuters via Investing.com, November](https://www.investing.com/news/stock-market-news/exclusivemicrosoft-presses-trump-to-scuttle-expected-ban-on-chinese-data-center-technology-5014745)\n---\n2026-08: Reuters reports the administration is drafting a ban\n2026-09: Microsoft and others meet White House science and security officials\n2026-10: Morgan Stanley flags a possible 3.2-terabit cutoff\n2026-11-10: Reuters reports Microsoft is pressing to scrap the ban\n2028: 3.2-terabit parts expected to ramp up\n2029: Wide installation of 3.2-terabit parts expected\n```\n\nNo FCC proposal, threshold or timetable is public yet.\n\n## The reaction on X\n\nThe news spread fast. Watcher.Guru, an account with nearly 5 million followers, framed it as Microsoft asking Trump to \"scrap\" a ban on Chinese AI data center technology. That wording is broader than the facts; the ban targets transceivers.\n\nhttps://x.com/WatcherGuru/status/2120112765704527950\n\nInvesting.com's news account said US suppliers \"still lack the scale to fill the gap,\" turning a security push into a possible AI infrastructure bottleneck.\n\nhttps://x.com/newsinvesting/status/2120140928849510430\n\nTrade writer Alan Tonelson, who runs the RealityChek blog, took the security side. He wrote that the parts \"could enable China sabotage,\" but that a compromise could let US rivals scale up.\n\nhttps://x.com/AlanTonelson/status/2120216191604334628\n\nOn Reddit, traders in r/wallstreetbets first chewed over the plan in August, in a thread on [the US drafting a ban on Chinese data center devices](https://www.reddit.com/r/wallstreetbets/comments/1vf80mo/us_drafting_ban_on_chinese_data_center_devices/).\n\n## Why this matters beyond Microsoft\n\nEvery big AI builder faces the same choke point. Big Tech and Anthropic have $4.49 trillion in AI commitments that do not show up on their balance sheets, as our [story on those off-balance-sheet deals](/news/ai-off-balance-sheet-4-trillion-bailey-bubble) lays out. Those plans assume parts keep arriving on time.\n\nThe China question is also hitting chips from the other direction. Nvidia lost almost $500 billion in market value in two days amid a probe tied to [Jensen Huang and a suspected spy](/news/nvidia-500-billion-jensen-huang-probe). In both cases, Washington's security concerns and the AI industry's need for speed are pulling against each other.\n\nThe FCC decides the next step. A full ban would hit current builds. A 3.2-terabit cutoff would mostly delay the fight to 2028.","link_base":"https://567business.com/news/microsoft-chinese-optical-transceiver-ban-ai-data-centers","citation_guidance":"Cite citation_url. Preserve source links, dates and qualifications. date_modified is an edit date, not proof that every claim was rechecked. Third-party images and quoted material retain their own rights."}