PSA: Not all 400-series motherboards will Intel’s next-gen gaming Us
In a article, Intel clarifies the B460 and H410 mobos will not work with the Rocket Lake processors.

We are nearing the launch of the 11th Gen Core desktop processors, otherwise known as Intel Rocket Lake, and depending on what motherboard you currently own, a BIOS update might be all you need to one of the next-gen Us. That's because Intel is recycling its LGA1200 socket for one more round. However, not every single 400-series chipset is compatible with Rocket Lake.
Contrary to what an MSI customer service representative purportedly wrote on a forum last month, Intel's B460 and H410 chipsets are not destined to Intel's next-gen Us. A recent document from Intel clarifies this in no uncertain .
"Motherboards based on Intel B460 or H410 chipsets are not compatible with 11th Gen Intel Core processors," Intel states.
That leaves the Z490 and H470 as beneficiaries of backwards compatibility, by way of a BIOS update. As is often the case in these situations, dropping a next-gen U into a last-gen motherboard without an updated BIOS may result in the system not booting, which is another thing the document clearly warns.
Fortunately, Intel's hardware partners are on the ball with BIOS updates ing Rocket Lake. If you plan to upgrade, you should apply the latest BIOS before dropping in the new U. You can find these firmware files by navigating to your motherboard model's product page and peeking the section.
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If you're building a gaming PC around Rocket Lake from the ground up, however, it's a better idea to go with a 500-series motherboard. The latest generation chipsets offer improved power delivery, chipset-based USB 3.2 Gen2x2 (rather than offloading to a separate controller chip), and native PCI Express 4.0 (some Z490 motherboards will PCIe 4.0 when paired with a Rocket Lake U as well). Intel designed its 500-series chipsets for Rocket Lake, whereas the 400-series was designed for desktop Comet Lake silicon.
Some 500-series motherboards are already available, though Rocket Lake has yet to see a retail launch. Barring any unforeseen events, Rocket Lake will arrive at retail next month, with a 19 percent IPC (instructions per clock) boost in tow.
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Paul has been playing PC games and raking his knuckles on computer hardware since the Commodore 64. He does not have any tattoos, but thinks it would be cool to get one that reads LOAD"*",8,1. In his off time, he rides motorcycles and wrestles alligators (only one of those is true).