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Cable Matters Unidirectional Active Ultra Thin HDMI Cable 15 ft with RedMere Technology (Ultra Slim HDMI Cable) 4K Rated with Ethernet

4.4 4.4 out of 5 stars 673 ratings

$20.49 with 20 percent savings
List Price: $25.49

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Purchase options and add-ons

Brand Cable Matters
Connector Type HDMI
Cable Type HDMI
Compatible Devices Television, Tablet
Special Feature Data Transfer, High Speed

About this item

  • Redmere cable offers High Speed HDMI features including 4K x 2K video resolution support, full 3D pass-through, an audio return channel (ARC) to connect an A/V receiver, and an Ethernet channel to network a Smart TV without any extra cabling
  • Active HDMI cable has a booster and equalizer chipset that transmits the HDMI signal and 5V power farther and more reliably than a typical HDMI to HDMI cable; Ideal companion for 4K displays or devices with low power HDMI output like a tablet
  • Direction matters when installing this cable; Redmere HDMI cable is NOT bi-directional; Labeled connectors indicate the TV (display) and the SOURCE (device) ends of the HDMI cord to avoid confusion; TV (display) connector incorporates an embedded chipset that boosts the signal from the source; It only functions in one direction
  • Lightweight design combines gold-plated connectors with molded strain relief in a flexible 36 AWG solid copper conductor cable that weighs only a few ounces; Slim HDMI cable provides a snug and secure connection to vertical HDMI portsor to smaller equipment without falling out of the display or tugging on the device like heavier HDMI cables
  • HDMI application solution for a flush wall-mounted UHD TV; Pair with an HDMI extender, HDMI switch, or HDMI splitter; cable coils easily for installation in tight or crowded spaces

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Important information

Visible screen diagonal

0" / 0 cm


Product Description

Audio Arrangement

Active 4K HDMI Cable

The Cable Matters Active 4K HDMI Cable with RedMere Technology is designed to connect a computer, Blu-ray player, or set-top box to a 4K x 2K UHD TV, monitor or projector. It is universally compatible with HDMI devices and displays. Advanced feature support includes 4K x 2K video resolution, HD surround sound audio, and improved color spaces. The ARC audio return channel and Ethernet channel eliminate the need for extra cables when connecting a networked smart device.

Note: The terms HDMI, HDMI High-Definition Multimedia Interface, and the HDMI logo are trademarks or registered trademarks of HDMI Licensing Administrator, Inc.

4k

Authentic Audio & 4K Video

  • 4K@30Hz video resolution support
  • Backwards compatible with 2560x1440, 1920x1080, and below
  • Audio support for uncompressed digital 7.1, 5.1 or 2 channels audio
  • Control the audio using ARC (Audio Return Channel)

Dynamic RedMere Solution

Direction Matters!

30% Slimmer

Dynamic RedMere Solution

  • Embedded active chipset draws power from the source device
  • Boosts the signal and reduces data transmission loss on each channel

Direction Matters!

  • Cable is NOT bi-directional
  • Connect the DISPLAY end to the output only
  • Allow a 3" clearance behind your display

More than 50% Slimmer

  • Cable diameter is 50% less than a normal HDMI cable
  • Transmit audio video signals over a longer distances in a thinner cable

1 300016 Fiber Optic 8K HDMI Cable
Active HDMI Cable with Redmere Premium Certified HDMI Cable Fiber Optic 8K HDMI Cable
Customer Reviews
4.4 out of 5 stars
673
4.7 out of 5 stars
1,666
4.3 out of 5 stars
461
Price $20.49 $8.99 $69.99
Video Resolution Support Up to 4K Up to 4K Up to 8K
Lengths 15 Feet 3, 6, 10, 15, 20, 25 Feet 16.4 /32.8 Feet
Model Number 300018R 300016 300047

From the brand

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Cable Matters Unidirectional Active Ultra Thin HDMI Cable 15 ft with RedMere Technology (Ultra Slim HDMI Cable) 4K Rated with Ethernet
Cable Matters Unidirectional Active Ultra Thin HDMI Cable 15 ft with RedMere Technology (Ultra Slim HDMI Cable) 4K Rated with Ethernet
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Tartan 28 AWG HDMI Cable with Ethernet, Black, 15 Foot
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Price-20% $20.49
List:$25.49
$17.99$13.99$39.95$12.99$8.10
Delivery
Get it as soon as Thursday, May 16
Get it as soon as Thursday, May 16
Get it as soon as Thursday, May 16
Get it as soon as Thursday, May 16
Get it as soon as Thursday, May 16
Customer Ratings
Quality of material
4.6
4.6
4.3
4.5
Picture quality
3.8
4.7
4.3
4.5
Value for money
3.7
4.5
4.2
4.4
Sold By
Cable Matters
AnkerDirect
Cable Matters
Amazon.com
Cable Matters
Blue Jeans Cable
cable type
HDMI
HDMI
HDMI
HDMI
HDMI
HDMI, Ethernet
connector type
HDMI
HDMI
HDMI
HDMI
HDMI
HDMI
connector gender
Male, Male
Male-to-Male
Male, Male
Male-to-Male
Male-to-Male
cable length
15 feet feet
9.8 feet
33 feet feet
6.6 feet feet
compatible devices
Tablet, Television
PlayStation, Television, Xbox
Television, Xbox
PlayStation, Television, Xbox, Monitor
DVD Player
data transfer rate
10.2 gigabits per second
48 gigabits per second
48 gigabits per second
48 gigabits per second

Product information

Warranty & Support

Product Warranty: For warranty information about this product, please click here

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Cable Matters Unidirectional Active Ultra Thin HDMI Cable 15 ft with RedMere Technology (Ultra Slim HDMI Cable) 4K Rated with Ethernet

Cable Matters Unidirectional Active Ultra Thin HDMI Cable 15 ft with RedMere Technology (Ultra Slim HDMI Cable) 4K Rated with Ethernet


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Customer reviews

4.4 out of 5 stars
4.4 out of 5
673 global ratings

Customers say

Customers like the thickness and weight of the HDMI cable. For example, they mention it's amazingly thin and lightweight. Some appreciate the flexibility, and width. That said, some complain about the connectivity issues. Opinions are mixed on performance, quality, and value.

AI-generated from the text of customer reviews

33 customers mention25 positive8 negative

Customers like the thickness of the electronic cable. They mention it's amazingly thin, easy to work with, and a great ultra thin cable for HDMI with excellent picture quality.

"This cable is thin and lightweight. I purchased it for travel, when weight is critical...." Read more

"...I do like that these specific cables are fairly thin and cable matters ever has thinner cables in certain connections, called the Ultra Slim cables...." Read more

"Excellent, thin cables. Warning: be sure to find the HDMI connector that is labeled for TV...." Read more

"This cable was very thin and easy to cable manage but does not work over 1080P. My monitor was 3440x1440 and it would only display 1080P. I ended up..." Read more

20 customers mention20 positive0 negative

Customers like the weight of the HDMI cable. They mention that it's far less bulky than a regular HDMI cable, and is the perfect weight and length. Some appreciate the slim design and compact plug. Overall, most are happy with the quality and functionality of this product.

"This cable is thin and lightweight. I purchased it for travel, when weight is critical...." Read more

"...This usually sits on a tv stand, but does not get bulky; I can easily bring it to my couch to connect to iPad to watch and control videos from my..." Read more

"So far it works fine and is far less bulky than a regular HDMI cable...." Read more

"...Connected correctly, the cable works as it should and and it is slim - the reason I bought this one...." Read more

12 customers mention12 positive0 negative

Customers find the HDMI cable flexible and easy to run. They say it's thinner and more flexible than standard HDMI cables, making it easy to connect from across a typical hotel room. Customers also say the wiring is more flexible and does not tug at the ends. They mention that the cable is light enough and flexible enough to be easily packed for travel.

"...This one is very flexible and the quality seems fine to me...." Read more

"...It is long enough and flexible enough to connect from across a typical hotel room and allows me to easily stream movies to the hotel TV...." Read more

"I wanted a thin cable and this is it. Performs fine and is very flexible. Just what I wanted." Read more

"This cable is truly thin and flexible. The 15 foot length comes in hamdy when your equipment rack sits away from your screen." Read more

9 customers mention9 positive0 negative

Customers are satisfied with the width of the HDMI cable. They mention that it's exactly the right size, length, and flexible cable needed to hook up their iPad to their TV. Some say that the cable does not take up room in their bag. They also say that it fits through with no issue. Customers also say the housing fits perfectly into the HTC Vive cable enclosure and provides a good quality VR. Overall, most are happy with the quality and length of the product.

"...It might be my fault. I wish it worked. The size/gauge is perfect...." Read more

"Unlike standard HDMI cables, its housing fits perfectly into HTC Vive cable enclosure and provides a good quality VR...." Read more

"Exactly the right size, length and flexible cable needed to hook up my iPad to our smart TV" Read more

"...It is long enough and flexible enough to connect from across a typical hotel room and allows me to easily stream movies to the hotel TV...." Read more

73 customers mention35 positive38 negative

Customers are mixed about the performance of the cable. Some mention it works great, while others say it didn't work for them. Some say it's well made, but others say that it stopped working after a few months.

"...Not this one. If you connect backwards it WILL NOT work. I struggled for a few minutes until I swapped the cable ends. Voila! Picture and sound!..." Read more

"...I purchased it for travel, when weight is critical. It worked fine with my Fire Stick, but would not connect my Samsung phone to TV from the HDMI..." Read more

"...It passed the 4K (18GBPS) test. Not good enough for my system...." Read more

"...our aux HDMI to connect different TV game consoles and it works well for that purpose." Read more

51 customers mention26 positive25 negative

Customers are mixed about the quality of the electronic cable. Some mention it's a good quality HDMI cable, with great build quality. However, others say that it failed after a few days, broke after 3 months of use, and didn't last.

"...The wire terminals seem to be solid and the connection terminals themselves seem to be well made...." Read more

"...This is not a two-way cable, but I'm not exactly sure what limitations that will introduce.So far Video Quality and Audio are fine...." Read more

"...its housing fits perfectly into HTC Vive cable enclosure and provides a good quality VR...." Read more

"...my Denon receiver, and confirm that it is unidirectional, but it FAILED the 8K (40GBPS) test consistently. It passed the 4K (18GBPS) test...." Read more

10 customers mention6 positive4 negative

Customers have mixed opinions about the value of the HDMI cable. Some find it worth the money, while others say it's a waste of money.

"...I mostly order things online. Simply because the price is usually better and its just more convenient...." Read more

"...Avoid. I trusted cablematters brand, this item sucks." Read more

"...It's on the pricy side. But I think it's worth the money. Will definitely order a couple more." Read more

"It worked a couple times, then would not work for me again. A waste of money for me." Read more

12 customers mention2 positive10 negative

Customers are dissatisfied with the connectivity of the cable. They mention that it didn't work connecting their laptop to their project via microdisplay to HDMI dongle, it didn’t work well for 4K, and the connection was hard to get and maintain. Some say that it's good to work with but did not transmit the information from their laptop.

"...It worked fine with my Fire Stick, but would not connect my Samsung phone to TV from the HDMI adapter - this requires a thicker cable - the reason..." Read more

"...If the mac sleeps and you wake it up, no signal is sent to the TV rendering the whole thing useless for my purposes...." Read more

"...Receiver to my new AWOL Vision 3500 projector and got an intermittent connection...." Read more

"...switched to screen streaming without a cable because the connection was so hard to get (and maintain) over time via the cable...." Read more

Cable was used and not working
1 Star
Cable was used and not working
The cable arrived as pictured, so it was obviously used. It even had the previous owner’s labels on the connectors. I really needed the cable, so I was willing to keep it...but of course it didn’t work. Maybe Cable Matters should have tested it after it was returned the first time.
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Top reviews from the United States

Reviewed in the United States on October 23, 2023
This cable is thin and lightweight. I purchased it for travel, when weight is critical. It worked fine with my Fire Stick, but would not connect my Samsung phone to TV from the HDMI adapter - this requires a thicker cable - the reason related by seller:"That cable uses an active chipset to boost the signal since the cable is so thin. In rare cases, devices like your phone can be incompatible with the active chipset."
One person found this helpful
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Reviewed in the United States on March 15, 2024
I got this for our aux HDMI to connect different TV game consoles and it works well for that purpose.
Reviewed in the United States on February 7, 2018
These days there are very few things that I actually go to the store and buy. I mostly order things online. Simply because the price is usually better and its just more convenient. Cables are one of those things I usually go to the store and purchase so that I can physically see the cable that I am ordering. There are just so many manufacturers that produce different types of cables of different qualities and repackage and relabel them for specific retailers. You just never really know the level of quality you are getting from cables you order online. Its on of these hit and miss things. Some cables though. Especially conversion cables of a specific length. You just have to order online, because you will be hard pressed to find them in the stores. My point is that these cable matters cables are quality made for their price point. This is my second time purchasing them and you plug them in and forget about them they work so well. The wire terminals seem to be solid and the connection terminals themselves seem to be well made. I do like that these specific cables are fairly thin and cable matters ever has thinner cables in certain connections, called the Ultra Slim cables. So its nice to know where the brand of cables that I can purchase online with out having to worry about if they are good cables or not. Trying to drudge through the thousands and thousands of different cable brands online and look at reviews is just a head ache. I will still be purchasing my cables in the store for the most part, because cables are one of those things that I usually dont know I need right up until I need it, but when the need arises for me to order my cables online, Cable Matters will definitely be my go to.
7 people found this helpful
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Reviewed in the United States on August 22, 2021
I have bought numerous cables of all kinds and started to feel tired of thick, inflexible cables (any kind).
For whatever reasons, HDMI cables especially tend to be thick and super inflexible.
I had a long HDMI cable, but started to malfunction. I found this HDMI cable which sounded too good to be true since this is polar opposite of regular HDMI cables.
I can't express enough how happy I am with this too good to be true HDMI cable. This usually sits on a tv stand, but does not get bulky; I can easily bring it to my couch to connect to iPad to watch and control videos from my iPad without having to go to the TV stand.
This has improved quality of my life - it is simply the best!
One person found this helpful
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Reviewed in the United States on July 16, 2019
They mark the cable at both ends to indicate the orientation of the cable. I thought they were kidding, I’ve owned dozens of HDMI cables that were all omnidirectional. Not this one. If you connect backwards it WILL NOT work. I struggled for a few minutes until I swapped the cable ends. Voila! Picture and sound! Now that I know I’m good but it was a bugger to sort out while prepping for a presentation.
6 people found this helpful
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Reviewed in the United States on March 18, 2021
My company has a small HDMI video server that we're developing, so we're testing all kinds of different cables. This is not a two-way cable, but I'm not exactly sure what limitations that will introduce.

So far Video Quality and Audio are fine. Stay tuned - I'll update if we have any issues.
One person found this helpful
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Reviewed in the United States on April 4, 2023
I bought this to hook up my Mac Mini to my big screen TV. This thing works only if you plug in the hdmi cable while both the tv and mac on. If the mac sleeps and you wake it up, no signal is sent to the TV rendering the whole thing useless for my purposes. I replaced it with a bidirectional hdmi cable and it works perfectly.
Reviewed in the United States on December 11, 2023
I tried connecting this cable from my Onkyo Receiver to my new AWOL Vision 3500 projector and got an intermittent connection. Then tried it directly from my Panasonic Blu-Ray player to the projector. Same thing. I tested this cable on my Denon receiver, and confirm that it is unidirectional, but it FAILED the 8K (40GBPS) test consistently. It passed the 4K (18GBPS) test. Not good enough for my system. I tested all of my other NEW 4K cables, they all passed the 8K (40GBPS) test with the exception of the 10' Cable Matters cable. I was surprised that a variety of my older (but thicker/stiffer) cables passed the 8K (40GBPS) test, so I will be connecting my system with the tested cable.
One person found this helpful
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Top reviews from other countries

Amazon Customer
4.0 out of 5 stars Super thin and works great for 1080p 30hz
Reviewed in Canada on February 6, 2023
I have not tried 60hz or any higher resolution but this a perfect for a PC patch cable to your tv as a screen extension.
Mark Oakley
5.0 out of 5 stars I never thought HDMI cables could be so thin and flexible! This is great!
Reviewed in Canada on July 29, 2023
Not much to add beyond the headline.

Good cable. Just make sure to pay attention to the in/out direction, (One plug is for the source, the other the receiver). There's obviously some boosting or signal cleaning going on inside the dongles. Whatever they're doing, it works.

I'm using this cable with a camera, so being flexible is a real benefit.

Recommended
David Allen
4.0 out of 5 stars hdmi cable lol
Reviewed in Canada on March 6, 2024
it works as you would expect
though overall very happy with this brand's
products / transparency

weird thing is the hdmi cable fits oddly snug. i felt alot friction when I plugged it in, at least it feels firm.
Customer image
David Allen
4.0 out of 5 stars hdmi cable lol
Reviewed in Canada on March 6, 2024
it works as you would expect
though overall very happy with this brand's
products / transparency

weird thing is the hdmi cable fits oddly snug. i felt alot friction when I plugged it in, at least it feels firm.
Images in this review
Customer image
Customer image
kt
2.0 out of 5 stars Loses Picture on PS5
Reviewed in Canada on April 24, 2024
Thin and flexible. Worked great for PS3 and PS4 but loses signal periodically on PS5. Can be frustrating especially during gameplay.
Mamaroseeta
3.0 out of 5 stars It works well being a hdr10 60hz 4k compatible cord however but mine came in bad shape
Reviewed in Canada on December 5, 2022
But either from being left out in the cold or due to delivering processes it may have cause a breakage in the cord as it glitches out when trying to use hdr while on 4k causing artifacts and blackouts & no signal msgs on the monitor used