Collection: Yellow Network Cables

Which yellow network cable do you actually need?

Most PC builders treat an Ethernet cable as an afterthought, then wonder why a 2.5G or 10G port is negotiating at a fraction of its rated speed. The yellow jacket is just colour coding. Many people use it for PoE devices like cameras and access points, or to separate a gaming PC from the rest of the rack. What matters is the category rating, conductor material and shielding underneath.

Entry tier is Cat5e, rated to 100 MHz. It handles gigabit fine and can manage 2.5G over short runs, but it has the least crosstalk headroom. Sweet spot is Cat6, rated to 250 MHz, with a tighter twist and often an internal spline separating the pairs. That cuts crosstalk and makes 2.5G and 5G reliable, and 10G workable up to roughly 55 metres. Cat6A doubles the bandwidth to 500 MHz and holds 10G across a full 100 metre run, with thicker jackets and usually shielding. Cat7 and Cat8 sit above that. Cat8 is rated to 2000 MHz for 25G and 40G, but only over about 30 metres, and it is designed for switch-to-server links in data centres. Diminishing returns hit hard past Cat6A. Your internet plan, router and switch will bottleneck long before the cable does.

Upgrading and technical nuances

The first trap is thinking the cable sets your speed. The slowest link in the chain does: the NIC, the switch port, the router and the cable all negotiate together. Most current Motherboards ship with 2.5G LAN as standard on both AM5 and LGA1851 boards, and enthusiast boards often add 5G or 10G. If you have one of those and are still running a decade-old Cat5e cable, a Cat6 or Cat6A swap is a cheap fix. If you are on gigabit and an NBN plan under 1Gbps, Cat6 is already more than enough.

Shielding is the second decision. UTP (unshielded) is fine for a typical home run. F/UTP or S/FTP adds foil or braiding around the pairs, which helps when your cable runs alongside power cables, in a rack, or past a noisy PSU. The catch is that shielding only works when it is grounded properly through shielded connectors and ports. A shielded cable in an unshielded setup does very little and can even act like an antenna in bad cases.

Conductor material matters more than most spec sheets admit. Pure copper conductors keep resistance low and handle PoE heat properly. Copper-clad aluminium (CCA) cables are cheaper, but they have higher resistance and are brittle, and they can run hot when you push PoE+ or PoE++ loads. If a cable is suspiciously cheap and does not say "pure copper" or "bare copper", assume CCA. Also, patch cables use stranded conductors for flexibility, while in-wall runs use solid core. Do not use solid core as a patch lead you bend repeatedly.

For reputable families to look for, Alogic, Ugreen, Cable Matters, StarTech.com and Belkin all do solid Cat6 and Cat6A patch leads. Cat8 from these brands makes sense mainly if you are linking a 10G NAS or workstation and want headroom. For the router and switch side, pairing with TP-Link gear from our Networking range is a safe way to match ports and speeds.

Practical things to check before buying

Length is the first check. Measure the actual route, including the bends around your desk, behind the Computer Cases and up to the wall plate or switch. Buy about 20 per cent longer than your measurement, but avoid huge coils, which add clutter and can pick up interference. Most home setups sit between 1 and 10 metres, so the 55 metre limit for 10G over Cat6 rarely comes into play.

Connector and boot design matter in tight spaces. Snagless boots stop the clip catching on other cables, but a bulky boot can be a pain on dense switch faceplates or a motherboard I/O cluster with stacked ports. Slim boots solve this. Flat cables are handy under carpet or doors, but they usually have worse crosstalk performance, so keep them for short hops.

Check the jacket rating if you are running cable through walls or ceilings. PVC is the usual standard. LSZH (low smoke zero halogen) is a better choice in enclosed or commercial spaces. Outdoor runs need UV-resistant jackets, and anything exposed to sun in an Aussie summer will crack cheap PVC fast.

Finally, look for proper certification or testing claims, such as TIA/EIA-568 compliance or a fully wired 8-conductor test. Some bargain cables only connect four wires, which limits you to 100 Mbps. Once it arrives, check the link speed in your OS network settings. If a 2.5G or 10G port reports less, swap the cable first before blaming the hardware. If you are building from scratch, our Computers range and the wider Cables & Connectors collection cover most of what you need.

Brands and local warranty

For reputable brands, Alogic, Ugreen, StarTech.com, Belkin, Cable Matters and TP-Link are the ones I would trust. They are consistent with specs and have decent QC on termination. No-name cables from marketplaces are where you find CCA, short-pinned plugs and made-up category claims.

Local warranty matters even for something as simple as a cable. A cheap cable that fails after six months is annoying. A bad cable buried in your wall that is intermittently dropping packets is much worse. Buying through an Australian retailer means the product is covered under Australian Consumer Law, and if the cable is a genuine local-channel product, the manufacturer's warranty is actually honoured. Overseas grey imports often leave you shipping something back to another country.

Frequently asked questions

Is Cat6A worth it over Cat6 for a gaming PC?

For gaming, no. Latency is the same on both, and online play uses very little bandwidth. Cat6A is worth it if you have a 10G NIC, a NAS with 10G, or you are running a long cable bundled with power lines where the shielding helps.

Will a yellow cable perform differently to a blue or black one?

No. The colour is only the jacket pigment. Performance comes from the category, conductor material, twist quality and termination. Yellow is just useful for identifying a specific link, such as a PoE camera or a dedicated gaming line.

Can I use Cat8 on a regular home network?

Yes, it is backwards compatible with RJ45 ports. You will not see any speed benefit unless your devices run above 10G, which is rare at home. It is also stiffer and thicker, so it is harder to route.

Why is my 2.5G port only linking at 1G?

Common causes are an old Cat5 cable, a damaged or poorly crimped plug, or a switch or router port that only supports gigabit. Try a known good Cat6 cable and check that both ends support 2.5G.

Is a longer cable slower?

Not within the 100 metre limit. Signal loss only becomes an issue near the maximum length, particularly with Cat6 at 10G, which is limited to about 55 metres.