Cat6a Ethernet Cable: Specs, Features, Pros & Cons
With Category 6a, ten gigabit Ethernet gets the full hundred-meter channel every slower speed already had, and it gets it on ordinary RJ45 plugs. Nothing in copper carries ten gigabit any further. Category 8 runs faster only over thirty meters, and the ISO shielded classes reach the same speed with connectors ordinary equipment does not use. ISO's name for this level is Class EA, which is also where a Category 7 or 7a link ends up once it is terminated in RJ45 plugs.
This grade was also the first category with limits on alien crosstalk, the interference between adjacent cables rather than between pairs inside one, which is what makes performance predictable in a bundle instead of dependent on how carefully someone dressed the riser. For anyone wiring a whole house or a floor of an office at once, that specification is doing real work.
It supports the highest power-over-Ethernet tier, so a single run can carry a camera, an access point or a display and its power together.
The cable is noticeably thicker and stiffer than the grades below, with a larger bend radius, which makes it harder to route through existing conduit and around tight corners. In a retrofit through existing ducts, that bulk is a real argument for a thinner grade, since a duct sized for older cable fills up after fewer runs, and the question becomes whether ten gigabit at full distance will ever be needed.
Category strengths
Where the Cat6a Ethernet Cable beats the median
- A much higher 10 Gigabit reach ?100 m vs 42.5 m (median)
- Has alien crosstalk limits ?
- A higher bandwidth ?500 MHz vs 375 MHz (median)
How this VS Score was computed
Score 74: each known spec is measured against the median of all ethernet cables (8 products), then weighted; 50 means level with that median. In classes of six or more, a value beyond the class’s 10th–90th percentile range counts as that limit, so one extreme product cannot set the scale. 79% of the scoreable weight could be used; unknown values, features not applicable to this class and proxies (battery capacity where a rated life exists) add or remove nothing.
| Specification | This product | Cohort median | Score weight | Points moved |
|---|---|---|---|---|
| 10 Gigabit reach | 100 | 42.5 | 2 | +100.0 |
| 10 Gigabit Ethernet | Yes | 63% of the class have it | 2 | +100.0 |
| Native RJ45 connector | Yes | 75% of the class have it | 2 | +100.0 |
| Recognition for new installs | Yes | 75% of the class have it | 2 | +100.0 |
| Multi-gig (2.5G / 5G) | Yes | 75% of the class have it | 1.5 | +75.0 |
| Alien crosstalk limits | Yes | 33% of the class have it | 1 | +50.0 |
| Shielded construction | No | 38% of the class have it | 1 | −48.0 |
| Bandwidth | 500 | 375 | 2.5 | +42.5 |
| Maximum data rate | 10 | 10 | 3 | +0.0 |
| Reach at top speed | 100 | 100 | 1.5 | +0.0 |
| Typical shielding | U/UTP (unshielded) | U/UTP (unshielded) | 1.5 | +0.0 |
| Maximum PoE power | 90 | 90 | 1.5 | +0.0 |
Not scored: Gigabit Ethernet (standard for the class (88% have it)); 25G / 40G Ethernet (not applicable: only 13% of this class have it); Conductor material (unknown: not scored); Snagless boots (unknown: not scored); PoE++ (Type 4, 90 W) (standard for the class (88% have it)); Backward compatibility (standard for the class (100% have it)).
Editor’s note
Category 6a is the cable to pull when you do not want to think about the wiring again. Published in 2008, it doubles Cat 6's tested bandwidth to 500 MHz, and the point of that headroom is a single specification: 10 Gigabit Ethernet across a full 100-meter channel, the same distance every other Ethernet speed gets. Cat 6 manages 10 Gigabit only to 55 meters, and that gap is the entire reason 6a exists.
The less visible improvement matters just as much. Cat 6a is the first category to specify alien crosstalk, the interference between one cable and its neighbors in a bundle. That is the failure mode that breaks 10 Gigabit in a real installation: an individual link tests fine on the bench and fails once forty of them are cable-tied together in a tray. Cat 6 has no such limits, which is why its 55-meter figure degrades in dense trunking, and why cabling contractors treat 6a as the floor for anything commercial.
Cat 6a is noticeably thicker and stiffer than Cat 6, with a larger bend radius and a much bigger appetite for conduit space. Shielded builds, which are common, add the requirement that the screen is bonded and grounded properly at both ends or it does more harm than good. Terminating it takes longer too.
Ninety-watt Type 4 PoE running through a bundle generates heat, and 6a's thicker conductors and better thermal behavior make it the sensible choice for PoE lighting, cameras and access points in modern buildings. If someone is opening walls anyway, this is the cable that should go into them.
Specifications
Quality bars show where each figure sits between the lowest and highest of the 8 ethernet cables this VS Score is measured against.
Speed & reach
Construction & shielding
Power & connectors
Standards & status
Sources and verification
Where the specifications come from
- Official product pagewebstore.iec.ch
- Datasheet or manualstandards.ieee.org
Verification
- First published
- Specifications last checked
- Sheet completeness
- 22 of 28 specifications verified; the rest show as Unknown and are never estimated or scored
- Page type
- Product specification page — Compiled from the manufacturer’s published specifications and the cited sources; this is not a hands-on test.
- Basis
- Research-based: specifications and editorial text were compiled from the documents listed here and the manufacturer’s published data. We have not tested this unit ourselves; where independent measurements are mentioned they belong to the linked publication.
Ratings & reviews
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The bottom line
The Cat6a Ethernet Cable earns a VS Score of 74, above the median of the 8 ethernet cables it is measured against (a score of 50 is level with that median).
- Who it’s for
- Structured cabling you do not want to redo: 10 Gigabit at full length, dense bundles, and high-power PoE.
- Who should look elsewhere
- Tight conduit and short patch runs, where its thickness and bend radius are a nuisance for no benefit.
- The trade-off that matters
- It is the last cable most buildings will ever need, and the exchange is a cable that is thicker, stiffer and slower to terminate.
- The main alternative
- Cat6 Ethernet Cable: thinner and easier to route where ten gigabit runs stay short
The VS Score is calculated from the weighted specifications above, each measured against the median of comparable ethernet cables — a shortlisting guide, not a substitute for your own priorities. See how we score.