--- title: Some of the best-selling Cat6 Ethernet cables are fake,... description: Many best-selling Cat6 Ethernet cables on Amazon use copper-clad aluminum (CCA) conductors instead of solid copper, which means they technically don't meet the... canonical: https://daily.dev/posts/some-of-the-best-selling-cat6-ethernet-cables-are-fake-and-you-can-t-legally-run-them-in-your-walls-kb972c7vx twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Some of the best-selling Cat6 Ethernet cables are fake, and you can't legally run them in your walls | daily.dev og:description: Many best-selling Cat6 Ethernet cables on Amazon use copper-clad aluminum (CCA) conductors instead of solid copper, which means they technically don't meet the... og:url: https://daily.dev/posts/some-of-the-best-selling-cat6-ethernet-cables-are-fake-and-you-can-t-legally-run-them-in-your-walls-kb972c7vx og:image: https://api.daily.dev/og/posts/KB972C7VX.png og:image:alt: Some of the best-selling Cat6 Ethernet cables are fake, and you can't legally run them in your walls og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Some of the best-selling Cat6 Ethernet cables are fake, and you can't legally run them in your walls **[XDA Developers](https://daily.dev/sources/xda-developers)** · 4 min read · 0 upvotes · 0 comments ## Summary Many best-selling Cat6 Ethernet cables on Amazon use copper-clad aluminum (CCA) conductors instead of solid copper, which means they technically don't meet the Cat6 specification. While CCA cables can handle basic data transmission on short runs due to the skin effect, they fail for PoE applications because DC power uses the full conductor cross-section — causing heat buildup, voltage drop, and potential safety risks. Cables installed permanently in walls should always be solid copper with a UL listing. Tips for identifying CCA cables include checking price, weight, and jacket markings. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [CCA Ethernet Cables: Not Up To Scratch, But Are They Dangerous?](https://daily.dev/posts/cca-ethernet-cables-not-up-to-scratch-but-are-they-dangerous--rfmelqke4) · Hackaday · 0 upvotes · 0 comments - [Your Cat7 cable is probably counterfeit — here's why Cat6a is the real upgrade](https://daily.dev/posts/your-cat7-cable-is-probably-counterfeit-here-s-why-cat6a-is-the-real-upgrade-uyv5awfjn) · XDA Developers · 1 upvotes · 0 comments - [Everyone talks about Cat5e, Cat6, and even Cat7, but what about Cat8?](https://daily.dev/posts/everyone-talks-about-cat5e-cat6-and-even-cat7-but-what-about-cat8--nzhn8gk86) · XDA Developers · 1 upvotes · 1 comments --- Tags: [#networking](https://daily.dev/tags/networking), [#homelab](https://daily.dev/tags/homelab) [View this post on daily.dev](https://daily.dev/posts/some-of-the-best-selling-cat6-ethernet-cables-are-fake-and-you-can-t-legally-run-them-in-your-walls-kb972c7vx) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Some of the best-selling Cat6 Ethernet cables are fake, and you can't legally run them in your walls","url":"https://daily.dev/posts/some-of-the-best-selling-cat6-ethernet-cables-are-fake-and-you-can-t-legally-run-them-in-your-walls-kb972c7vx","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/some-of-the-best-selling-cat6-ethernet-cables-are-fake-and-you-can-t-legally-run-them-in-your-walls-kb972c7vx"},"datePublished":"2026-06-09T12:01:33.243Z","dateModified":"2026-06-09T12:02:05.030Z","description":"Many best-selling Cat6 Ethernet cables on Amazon use copper-clad aluminum (CCA) conductors instead of solid copper, which means they technically don't meet the...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/12b0633219dfad14e734cce72cc8d87e?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/12b0633219dfad14e734cce72cc8d87e?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"XDA Developers","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"XDA Developers","logo":"https://media.daily.dev/image/upload/s--kCg6yyAP--/f_auto,q_auto/v1774964407/logos/xda-developers?_a=BAMAMiWQ0","url":"https://daily.dev/sources/xda-developers"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/some-of-the-best-selling-cat6-ethernet-cables-are-fake-and-you-can-t-legally-run-them-in-your-walls-kb972c7vx","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"networking,homelab","timeRequired":"PT4M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"XDA Developers","item":"https://daily.dev/sources/xda-developers"},{"@type":"ListItem","position":3,"name":"Some of the best-selling Cat6 Ethernet cables are fake, and you can't legally run them in your walls"}]} ```