--- title: I replaced my router twice before realizing a... description: A homeowner spent a year and two router replacements chasing a Wi-Fi speed problem before discovering the actual bottleneck was a 15-year-old Cat 5 Ethernet... canonical: https://daily.dev/posts/i-replaced-my-router-twice-before-realizing-a-10-year-old-cable-was-the-real-problem-iaour1kvg twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: I replaced my router twice before realizing a 10-year-old cable was the real problem | daily.dev og:description: A homeowner spent a year and two router replacements chasing a Wi-Fi speed problem before discovering the actual bottleneck was a 15-year-old Cat 5 Ethernet... og:url: https://daily.dev/posts/i-replaced-my-router-twice-before-realizing-a-10-year-old-cable-was-the-real-problem-iaour1kvg og:image: https://api.daily.dev/og/posts/Iaour1kvg.png og:image:alt: I replaced my router twice before realizing a 10-year-old cable was the real problem 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. # I replaced my router twice before realizing a 10-year-old cable was the real problem **[XDA Developers](https://daily.dev/sources/xda-developers)** · 3 min read · 0 upvotes · 0 comments ## Summary A homeowner spent a year and two router replacements chasing a Wi-Fi speed problem before discovering the actual bottleneck was a 15-year-old Cat 5 Ethernet cable connecting the modem to the router, capped at 100 Mbps. Replacing it with a cheap Cat 5e cable fixed the connection drops and speed issues that new routers and mesh systems never solved. The lesson: check simple, cheap components before spending money on new hardware. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What is the maximum throughput of a Cat 5 Ethernet cable compared to Cat 5e? A Cat 5 Ethernet cable is limited to 100 Mbps of throughput, which becomes a bottleneck for modern internet plans and can cause connections to drop entirely when the line is fully saturated, such as during a large file download. Cat 5e and Cat 6 cables support significantly higher speeds and are recommended replacements for old Cat 5 wiring still found in many home setups. _Anyone chasing a mystery slowdown can compare cabling and hardware troubleshooting notes on daily.dev before buying new gear._ ### Why would my Wi-Fi still be slow after upgrading to a mesh Wi-Fi system? A mesh Wi-Fi upgrade can fix coverage problems by improving signal strength throughout a house, but it will not fix a throughput bottleneck caused by an outdated wired connection, such as a Cat 5 cable feeding the modem into the router. Intermittent speed drops and connection failures during large downloads point to a wiring issue rather than a wireless coverage issue. _Developers and homelab tinkerers debugging network setups can track troubleshooting stories like this on daily.dev._ ## Similar posts on daily.dev - [Your home network is only as fast as its slowest cable, and most people have at least one bad one](https://daily.dev/posts/your-home-network-is-only-as-fast-as-its-slowest-cable-and-most-people-have-at-least-one-bad-one-1hkl1tbg8) · XDA Developers · 0 upvotes · 0 comments - [Swapping two cheap Ethernet cables doubled network speeds overnight](https://daily.dev/posts/swapping-two-cheap-ethernet-cables-doubled-network-speeds-overnight-urqxpwezh) · XDA Developers · 0 upvotes · 0 comments - [Your Ethernet cable is the reason your connection is slow, not your PC](https://daily.dev/posts/your-ethernet-cable-is-the-reason-your-connection-is-slow-not-your-pc-s6xesrlkz) · XDA Developers · 0 upvotes · 0 comments - [Why SA homes need better Wi-Fi, not faster internet](https://daily.dev/posts/why-sa-homes-need-better-wi-fi-not-faster-internet-yy4yk02md) · TechCentral · 0 upvotes · 0 comments - [4 networking roadblocks I've faced over the years, and how I fixed each of them](https://daily.dev/posts/4-networking-roadblocks-i-ve-faced-over-the-years-and-how-i-fixed-each-of-them-e8b5pukon) · XDA Developers · 0 upvotes · 0 comments --- Tags: [#networking](https://daily.dev/tags/networking) [View this post on daily.dev](https://daily.dev/posts/i-replaced-my-router-twice-before-realizing-a-10-year-old-cable-was-the-real-problem-iaour1kvg) ```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":"I replaced my router twice before realizing a 10-year-old cable was the real problem","url":"https://daily.dev/posts/i-replaced-my-router-twice-before-realizing-a-10-year-old-cable-was-the-real-problem-iaour1kvg","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/i-replaced-my-router-twice-before-realizing-a-10-year-old-cable-was-the-real-problem-iaour1kvg"},"datePublished":"2026-08-22T21:00:28.709Z","dateModified":"2026-10-15T02:22:57.077Z","description":"A homeowner spent a year and two router replacements chasing a Wi-Fi speed problem before discovering the actual bottleneck was a 15-year-old Cat 5 Ethernet...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/2bb863ccb63f8451b2355105952eee7f?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/2bb863ccb63f8451b2355105952eee7f?_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/i-replaced-my-router-twice-before-realizing-a-10-year-old-cable-was-the-real-problem-iaour1kvg","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"networking","timeRequired":"PT3M"} {"@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":"I replaced my router twice before realizing a 10-year-old cable was the real problem"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/i-replaced-my-router-twice-before-realizing-a-10-year-old-cable-was-the-real-problem-iaour1kvg#faq","mainEntity":[{"@type":"Question","name":"What is the maximum throughput of a Cat 5 Ethernet cable compared to Cat 5e?","acceptedAnswer":{"@type":"Answer","text":"A Cat 5 Ethernet cable is limited to 100 Mbps of throughput, which becomes a bottleneck for modern internet plans and can cause connections to drop entirely when the line is fully saturated, such as during a large file download. 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