Windows Hardware Quality Laboratory (WHQL) ensures that OEMs produce high-quality hardware and software and can interact with Microsoft products in an efficient and optimized way. OEM products must pass the appropriate hardware compatibility test (HCT). If successful, they will be listed in the Hardware Compatibility List (HCL) and get the "Designed for Windows" logo. The Windows logo on hardware products ensures that the products meet the standards set by Microsoft that are compatible with the Windows operating system.

That is to say, this is a standard set by Microsoft, but in fact, hardware manufacturers must design products according to Windows standards, so the products they produce must meet Windows standards, and there is no need to deliberately carry out certification. And this certification is tantamount to Microsoft's strategy to curb hardware manufacturers. Hardware manufacturers may have to pay a certain cost to pass this standard certification, so many manufacturers will not carry out certification, but this does not mean that the product has problems.