Google is offering a free upgrade path by moving hundreds of millions of Windows 10 devices to ChromeOS Flex, a modern cloud-based OS designed to run on aging hardware.

In partnership with Back Market, Google is providing a ChromeOS Flex USB Kit to help users convert their PCs, with the hardware kit expected to cost around three dollars.

Back Market confirms the upgrade is truly free—no subscription or hidden fees—and notes the USB kit is temporarily out of stock, though users can still install ChromeOS Flex on their own.

ChromeOS Flex targets Windows 10 machines that can’t meet Windows 11 TPM 2.0 requirements, offering a viable, secure alternative.

For those awaiting restocks, Back Market offers a notification option to be alerted when the ChromeOS Flex USB Kit becomes available again.

Google frames ChromeOS Flex as a fast, secure, and sustainable option that extends the life of older hardware with a cloud-based OS and ongoing protection against malware.