Intel has cleared two more compliance hurdles ahead of the launch of its next-generation Core Ultra 400-series Nova Lake processors, with listings appearing at the USB Implementers Forum and PCI-SIG. The USB-IF Integrators List confirms that Intel's mobile Nova Lake-H processor, carrying Device IDs D331 and D333, meets the USB4 80 Gbps specification. That result is consistent with expectations, since the part is also expected to support Thunderbolt 5.
The same listing shows that Intel's desktop Nova Lake PCH-S chipset, Device ID 6E6E, is compliant with USB 3.2 Gen2 and supports data transfer rates up to 20 Gbps. That figure matches previously reported unofficial details about Intel's 900-series chipsets. Missing from the Integrators List is Intel's desktop Nova Lake processor that is expected to support USB4.
Intel's decision to submit a desktop chipset and a high-performance notebook CPU first may look unusual, but the USB-IF operates a program called Qualification by Similarity, or QbS, for products that are sufficiently alike. Under QbS, testing one product can allow related products to be certified and added to the Integrators List with limited or no extra compliance testing. Because USB4 and USB 3.2 circuitry across different Nova Lake products is similar, Intel can submit selected CPUs and chipsets for testing and then follow up through QbS.
USB-IF certification is formally tied to a specific product name, model and revision, so products with different names are not certified automatically just because they contain identical USB circuitry. Those products must be submitted separately under QbS, after which the USB-IF determines whether the differences warrant additional testing.
On the PCI side, the PCI-SIG Integrators List has included Intel's 900-series chipset, covering Devices 6E38 through 6E3F, 6E30 through 6E35 and 6E40 through 6E47, for Core Ultra 400-series Nova Lake-S processors since April. In early August, an as-yet-unidentified Intel processor with Device IDs D461, D465, and D467 through D46A passed interoperability tests and was listed alongside that chipset. It cannot be stated with certainty that the device is a desktop Nova Lake CPU, though it is reasonable to suspect it belongs to the desktop Core Ultra 400-series platform.
With the official launch of Intel's Core Ultra 400-series Nova Lake processors for desktops and laptops approaching, these platforms must pass compliance and interoperability tests run by industry standards organizations. So far, Intel's Nova Lake CPUs and their supporting chipsets have passed PCI-SIG and USB-IF interoperability testing. Additional compliance listings are likely in the weeks or months ahead, and Intel will eventually need regulatory and environmental documents depending on what is sold and where, though such documents rarely become public before formal launches. The listings point to Intel's preparations for launching new desktop and laptop CPUs, with recent leaks pointing to Core Ultra 400-series launches in the first quarter of 2027.
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