Full 48Gbps. Zero Blackouts.
The cable that lets your 120Hz OLED, console and eARC soundbar run at the settings you paid for.
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Each part of the HyperLink 48G exists to keep a 48Gbps link stable, from the copper inside to the metal on the ends.
Solid 30AWG tin-plated oxygen-free copper carries a full FRL6 link (12Gbps × 4 lanes), so 4K 120Hz, HDR and VRR can run together without dropouts.
Each high-speed pair gets its own foil wrap inside an 85% tinned-copper braid, rated for -85dB crosstalk attenuation next to routers and power bricks.
Machined aluminum shells and 24K gold-plated contacts rated for 10,000+ insertions. The plug seats with 18 Newtons of retention and stays put in side-facing ports.
A supple nylon braid and short strain relief turn tightly behind slim wall mounts without pushing against the TV's HDMI input.
Solid copper conductors, individual foil wraps on each pair and a tinned-copper braid keep interference from power cords and Wi-Fi off the signal.
The aluminum plug locks into the HDMI 2.1 port with an 18N grip, while the flexible neck makes a 32mm turn inside a 1.5-inch wall gap.
Your TV and source agree on 4K 120Hz, VRR, Dolby Vision and eARC Atmos in under a second, with no flicker and no lip-sync drift.
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Certified 48Gbps Ultra-High-Speed HDMI 2.1 Cable (6.6ft / 2m)
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What it fixes: Random 2-second black screens, 4K 120Hz options that stay grayed out, colors stuck at 4:2:0, white sparkles on dark scenes and soundbars that lose eARC audio. These are usually cable problems, not TV problems.
How we tested it: 72 hours of continuous 48Gbps FRL6 on a Murideo SIX-G with a running microwave cord and Wi-Fi 6E router across the jacket, followed by daily use on an LG C4, PS5 Pro, RTX 4090, Apple TV 4K and Sonos Arc. We also flexed the connector neck 5,000 times at 90 degrees.
Honest trade-off: The triple shielding makes it 7.0mm thick and 148 grams. It is heavier than a thin office cord and isn't designed to fold into a travel pouch.
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2-Year Warranty: If anything goes wrong within 2 years, we replace it free of charge or refund your order in full.
It held a full 48Gbps link for three days on a professional analyzer, including hours under heavy interference.
It passes Dolby Vision 4K 4:4:4 to your TV and uncompressed Atmos to your soundbar, and the handshake stays locked when you switch inputs.
24K gold-plated contacts and a reinforced neck that survived 5,000 flexes in our testing without losing grip.
Cosari HyperLink 48GStandard Competitors
| Feature | Cosari HyperLink 48G | Standard Competitors |
|---|---|---|
| 4K 120Hz + HDR + VRR together | Stable, zero dropouts | Black screens under full load |
| Sustained 48Gbps bandwidth | 72 hours, zero bit errors | Often fails above 18–24Gbps |
| Shielding | Per-pair foil + 85% tinned-copper braid | Single foil or none |
| Behind a flush wall mount | 32mm bend, short boots | Stiff jacket levers the port |
| Price | $19.99 (50% off) | $50–$80 at big-box stores |
Swipe left for steps 2 and 3
Unwind the cable and pull the clear caps off both gold-plated ends.
Seat one end in your TV's HDMI 2.1 or eARC input and the other in your console, PC or soundbar. Either end works either way.
Enable enhanced HDMI mode on that input, then confirm 4K 120Hz, VRR and HDR in your source's display settings.
I spent three weeks thinking my new LG C3 OLED panel or my RTX 4080 had a bad HDMI port because the screen went black for 2 seconds every hour when G-Sync and HDR were running. Swapped in this Cosari 48G cable and haven't had a single dropout since. Also way more flexible behind my flush wall mount than the stiff Zeskit cord I tried before.
You can feel the build quality before you even plug it in—cold anodized aluminum shells, zero plastic mold seams, and a tight nylon weave that doesn't snag on Velcro ties. I actually brought mine into work and ran it on our Murideo signal generator: passed full 48Gbps FRL6 (12Gbps x 4 lanes) eye-pattern tests with zero bit errors.
My Sonos Arc used to randomly drop eARC Dolby Atmos audio whenever I switched inputs from my PS5 back to the built-in Netflix app. Swapped the stock HDMI cord for the Cosari HyperLink and it locked the eARC handshake down permanently. Haven't had to power-cycle my soundbar once in three weeks.
Plugged my PS5 Pro into my Sony Bravia XR and immediately got full 4K 120Hz + VRR + HDR RGB without it dropping down to YUV420 subsampling. The gold-plated connector clicks into the port with a super reassuring grip that doesn't wiggle loose when you adjust the TV swivel.
my old braided cable kept failing the apple tv 4k 'check hdmi connection' high speed test whenever i turned on dolby vision 4k 60hz chroma 4:4:4 and kicked me back to sdr. plugged this one in and it passed on the very first run. no more hdcp snow or random screen flicker.
Running 4K 144Hz G-Sync HDR from my desktop PC to my 42-inch OLED monitor. With my previous cable I got tiny white sparkles in dark scenes and a 10-second delay waking from sleep. With the Cosari it's dead clean and wakes up instantaneously every morning.
The sales guy at the electronics store tried hard to sell me an $85 cable when I picked up my new 77-inch OLED. Grabbed three of these Cosari cables at 50% off for less than the price of one store-brand cord, and the CNC metal plugs honestly feel heavier and better shielded.
3ft cables are always too short once you route them through a media stand, and 10ft passive cables start losing 48Gbps signal integrity. This 6.6ft length reached my wall-mounted TV through the in-wall brush plate with just enough slack to plug in comfortably.
I have a rat's nest of power strips, a UPS battery backup, and a mesh router crammed behind my entertainment center. Cheap HDMI cords always picked up interference and flickered whenever the mini-fridge kicked on. This triple-shielded braid eliminated the dropouts completely. Took 5 days to arrive via USPS.
Fixed the annoying audio lip-sync delay between my Xbox Series X, LG G3, and Samsung Q990C soundbar when Atmos was enabled. True 48Gbps eARC bandwidth makes a noticeable difference when you're passing uncompressed audio.
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Yes. It carries the full 48Gbps HDMI 2.1 bandwidth, so 4K at 120Hz or 144Hz, 10-bit RGB 4:4:4, HDR, VRR and ALLM can all run at once. We confirmed this on a PS5 Pro, an Xbox Series X and an RTX 4090 connected to an LG C4.
Yes. Plug it into your TV's eARC port and it passes uncompressed Dolby Atmos and DTS:X to soundbars and AV receivers, including the Sonos Arc and Bose models.
Yes. It works with HDMI 2.0 and 1.4 ports on devices like the Nintendo Switch, PS4, Fire TV Stick and 1080p or 4K60 monitors. Those devices will run at their own maximum settings.
No. Both ends are identical, so either end can go into the TV or the source device.
The aluminum shell is 19.5mm wide and 10.2mm thick, which is slim enough to sit side by side with other plugs on recessed TV panels and graphics cards.
For most setups, yes. 6.6ft (2m) reaches from a low media console to a wall-mounted TV with some slack, and it is short enough to carry full 48Gbps passively with no signal loss.