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Corrections

If a specification, compatibility note or claim on this site is wrong, please tell us. Include the page URL and, where you can, the manufacturer source that contradicts it — that lets us verify and fix it the same day rather than working out what changed.

Manufacturers and retailers

We are happy to receive corrected specifications, updated documentation and notice of discontinued or superseded products. What we cannot offer is paid placement, sponsored reviews, or any arrangement in which a payment affects what we recommend or what we say about it. See our editorial policy.

Readers

If a guide did not answer your question, that is useful feedback — it usually means a section is missing. Tell us what you were trying to find out.