Yuaice Cat 8 Flat Ethernet Cable, 100FT Review
A hundred feet of flat shielded Cat 8 with 26AWG copper, rated for weather and thin enough to hide under a carpet.
| Brand | Yuaice |
|---|---|
| Category | Cat 8 |
| Rated speed | 40Gbps |
| Bandwidth | 2000MHz |
| Length | 100 ft |
| Shielding | STP, shielded |
| Best for | Running a wired connection to a distant room, loft or outbuilding without rewiring the house |
Product Overview
The honest starting point for any Cat 8 cable is what the rating does for you, because the marketing and the reality are far apart. Forty gigabits at 2000MHz is a data centre specification. Home routers, consoles and PCs almost universally top out at one or two and a half gigabits, so this cable will not make your connection faster. What it will do is remove the cable from the list of things that could ever be the bottleneck.
Where the real value sits is the other specifications. A hundred feet is a genuinely long run, the jacket is UV resistant and described as waterproof and heat resistant for outdoor use, and the shape is flat rather than round. Those three together solve a specific and common problem: getting a wired connection to a room, a loft or a garden building where you were never going to run cable through a wall.
Shielded STP construction is the part that matters at this length. The longer the run, the more interference it can pick up, and shielding is what keeps a signal clean past a fluorescent light or alongside mains wiring. On a short patch lead it is close to irrelevant; at a hundred feet it is the reason the link stays stable.
Score Breakdown
This verdict is based on the manufacturer's stated specifications, the current Amazon listing and its product images, the confirmed materials and design, real buyer ratings, and our research into the product category. Scores are consistent editorial judgments, not laboratory measurements, and we did not receive a paid sample.
Key Features
Oxygen-free copper rather than thinner or clad wire, which is what keeps resistance down across a hundred feet.
Nearly irrelevant on a short patch lead and the reason a long run stays stable past fluorescent lighting and mains cable.
Slides under a carpet, through a door seam or along a skirting board, and coils into small loops without springing back.
Anti-aging, heat resistant and waterproof PVC, rated for cold, hot and humid weather on a run that leaves the house.
Shielded RJ45 ends with gold plating, which resists the oxidation that eventually makes a connector intermittent.
Works with Cat7 through Cat5 equipment, so an older router does not stop the cable functioning.
Enough to reach another floor, a loft or an outbuilding without running cable inside walls.
Design and Build Quality
Flat is the design decision that sells this. A round cable crossing a room is a trip hazard and a visible mess; a flat one slides under a carpet, through a door seam or along a skirting board held with clips. Yuaice also notes it can be curled into small loops without the memory that makes round cable spring back out of place.
The conductor is 26AWG oxygen-free pure copper, which Yuaice contrasts against 32AWG cable. That comparison is the important one and it is worth understanding, because the single most common problem with unbranded long ethernet cable is copper-clad aluminium or very thin conductors. Thinner wire means more resistance over distance, which is exactly the wrong property for a hundred foot run. Specifying pure copper at 26AWG is the right call.
The jacket is UV-resistant PVC described as anti-aging, heat resistant and waterproof, rated by Yuaice to withstand cold, hot and humid weather. For a run that leaves the house to reach a garage or a shed, that is the specification that decides whether the cable lasts a season or several years. Note that outdoor rated is not the same as buried rated, so keep it clipped and sheltered rather than under soil.
Connectors are gold-plated shielded RJ45, and compatibility runs backwards across Cat7, Cat6a, Cat6, Cat5e and Cat5, which in practice means every port you will plug it into. The cable weighs about 1 pound and is black. The listing gives the brand name in place of a model number, so there is no distinct model to quote.
Performance in Everyday Use
At a hundred feet the questions that matter are stability and loss, not headline throughput, and the specification answers both well. Pure copper at 26AWG keeps resistance down, the STP shield keeps interference out, and gold plating on the contacts resists the oxidation that eventually makes a connector intermittent. Those three are what a long cable actually needs.
For gaming, which Yuaice highlights with PS5, Xbox and PC, the benefit of a wired run is latency consistency rather than peak speed. WiFi varies with congestion and distance; a cable does not. A hundred feet of stable copper to a console in a back bedroom is a genuine improvement over a marginal wireless signal, and that is the real reason to buy this rather than the 40Gbps figure.
The flat shape has one trade worth knowing. Flat cables are easier to route and hide, but they are slightly more vulnerable to being crushed in a door frame or pinched under furniture than round cable, because the conductors sit side by side rather than twisted in a bundle. Route it with a little care at pinch points and it is a non-issue.
On compatibility there is nothing to think about. It works with routers, modems, consoles, switches and any RJ45 device, and the backwards compatibility across earlier categories means an older router does not stop it working. Yuaice also names smart home devices, where the practical benefit is again reliability rather than speed.
In short: buy this for the length, the weather rating, the flat shape and the copper. The category number is the least interesting thing about it.
How It Performs: The Evidence
| Decision factor | What we found | Evidence and measurement | Score | Why it matters |
|---|---|---|---|---|
| Conductor | 26AWG oxygen-free pure copper | Listing states 100 percent oxygen-free 26AWG pure copper core, described as thicker than 32AWG ordinary cables for faster and more stable transfer | 9.5 | Thin or clad wire is the usual fault in long cable, and resistance rises with distance |
| Shielding | Shielded STP design | Listing states the shielded STP design eliminates signal interference | 9.3 | At a hundred feet interference is a real risk, unlike on a short patch lead |
| Shape and routing | Flat, coils into small loops | Listing states the slim flexible flat design avoids tangling and is easy to hide under carpets, door seams or along walls, and can be curled into small loops | 9.5 | Getting the cable out of sight is the practical obstacle to a long run |
| Weather resistance | UV-resistant PVC jacket, heat resistant and waterproof | Listing states the UV-resistant PVC jacket is anti-aging, heat-resistant and waterproof, withstanding extreme cold, hot and humid weather | 9.0 | A run reaching a garage or shed is exposed for its whole life |
| Connectors | Gold-plated shielded RJ45 | Listing states gold-plated shielded RJ45 connectors ensure a stable connection | 9.0 | Oxidised contacts are what make an old cable intermittent rather than dead |
| Compatibility | Backwards compatible with Cat7 through Cat5 | Listing states full compatibility with Cat7, Cat6a, Cat6, Cat5e and Cat5 cables and all RJ45 port devices | 9.5 | Older routers and switches do not prevent the cable working |
| Rated speed | 40Gbps at 2000MHz | Listing states 40Gbps ultra-high speed and 2000MHz bandwidth for gaming and 4K or 8K streaming | 5.5 | Home routers and consoles cannot use anywhere near this, so it is headroom rather than speed |
| Model identification | No model number, only the brand name | The listing records both the model and part number as Yuaice, with the size given as CAT8-100FT | 6.0 | It makes identifying the exact item harder if you need a replacement or support |
Who Should Buy It
- Wiring a console in a distant bedroom
- Reaching a garage, shed or outbuilding
- Replacing a marginal WiFi signal with a cable
- Temporary runs that need hiding under carpet
- Connecting a switch on another floor
- Anyone expecting a faster internet connection, or a tidy in-wall installation where round cable belongs
- The 40Gbps and 2000MHz rating is far beyond what home gear can use
- Flat cable is easier to crush at a door frame than round cable
- Weather resistant is not the same as rated for burial
- The listing gives no model number, only the brand name
Full Specifications
How It Compares
| Feature | Yuaice | Typical budget | Premium option |
|---|---|---|---|
| Conductor | 26AWG oxygen-free copper | Thinner or clad wire | Pure copper |
| Shielding | STP shielded | Unshielded | Shielded |
| Shape | Flat | Round | Round |
| Outdoor rating | UV resistant and weather rated | Indoor only | Direct burial rated |
| Connectors | Gold-plated shielded RJ45 | Plain | Gold plated |
| Usable speed | Limited by your equipment, not the cable | Limited by the cable | Limited by your equipment |
| Routing | Under carpet and door seams | Needs a channel or clips | In-wall installation |
Alternatives Worth a Look
The right cable for a long awkward run, for reasons other than the one on the box. Ignore 40Gbps, which no home equipment can use, and buy it for what actually matters at a hundred feet: 26AWG pure copper rather than thin or clad wire, STP shielding against interference, gold-plated connectors, and a UV-resistant jacket that survives reaching a garage or shed. The flat shape is what gets it under a carpet and through a door seam. Just route it carefully at pinch points.
Frequently Asked Questions
Will this make my internet faster?
No, and that is the most important thing to understand. Your speed is set by your internet service and your router, not your cable. The 40Gbps rating is a data centre specification, while home equipment typically tops out far below it. What a cable can do is stop being a bottleneck, which this comfortably does.
So why buy Cat 8 at all?
For the things that actually matter at a hundred feet: 26AWG pure copper rather than thin or clad wire, STP shielding against interference, gold-plated connectors and a weather-resistant jacket. The category number comes along with those; it is not the reason the cable is good.
Can I run it outside to a shed?
Yes, within reason. The jacket is UV resistant and Yuaice describes it as anti-aging, heat resistant and waterproof across cold, hot and humid weather. Note that weather resistant is not the same as rated for direct burial, so clip it along a wall or fence rather than putting it under soil.
Why is it flat?
So you can hide it. A round cable crossing a room is a trip hazard and an eyesore, while a flat one slides under a carpet, through a door seam or along a skirting board. Yuaice also notes it coils into small loops without the springiness that makes round cable fight you.
Does the flat shape have a downside?
A small one. Because the conductors sit side by side rather than twisted in a round bundle, flat cable is slightly more vulnerable to being crushed in a door frame or pinched hard under heavy furniture. Route it with a little care at those points and it is not a concern.
Will it help my gaming?
If you are currently on marginal WiFi, considerably, but for the right reason. The benefit of a wired connection is consistent latency rather than higher peak speed, because WiFi varies with congestion and distance while a cable does not. Yuaice names PS5, Xbox and PC specifically.
Will it work with my older router?
Yes. It is backwards compatible with Cat7, Cat6a, Cat6, Cat5e and Cat5, and works with any RJ45 port, so routers, modems, switches and consoles are all fine. You simply get the speed your equipment supports rather than the cable's rating.
Is there a model number if I need support?
Not really, which is a minor annoyance. The listing records both the model and the part number as Yuaice, with the size shown as CAT8-100FT. Quote the length and the listing itself if you need to raise anything, since there is no distinct model code to reference.
This review is based on the manufacturer's stated specifications, the current product listing and its images, the confirmed category rating and bandwidth, shielding type, conductor gauge and material, connector plating, jacket properties, backwards compatibility, length, weight and colour, plus our own research into how conductor gauge and shielding affect long ethernet runs and what home equipment can actually use. It is editorial analysis, not laboratory testing. We have not tested this cable's throughput, and we have put the 40Gbps rating in the context of domestic hardware rather than repeating it as a benefit.