Cable Matters via Amazon has 4.9' Cable Matters USB-IF Certified 80Gbps 240W USB 4 Thunderbolt Cable (Black) on sale for $19.99. Shipping is free with Prime or on $35+ orders.
Thanks to Community Member violentleaf for sharing this deal.
Details:
USB-IF verified: Meets highest USB4 standards for reliable performance
Maximum specs: Up to 80Gbps bandwidth, 8K@120Hz video, 240W charging (PD 3.1 EPR)
Thunderbolt compatibility: Fully supports Thunderbolt 5, 4, and 3 (up to 80Gbps)
Blazing-fast data transfer: 80Gbps on USB4 devices; backward compatible with 20Gbps USB4 and older USB standards (3.2/3.1/3.0/2.0)
Video support: DisplayPort Alt Mode enables 8K@120Hz and 4K@480Hz for monitors, docking stations, gaming, editing, and streaming
High-power charging: 240W USB PD 3.1; backward compatible with 140W adapters (e.g., Apple, iPad Pro/Air) for fast charging of power-hungry devices
Broad device compatibility: Works with MacBook, USB-C/Thunderbolt laptops, tablets, and other USB-C or Thunderbolt-enabled electronics
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Cable Matters via Amazon has 4.9' Cable Matters USB-IF Certified 80Gbps 240W USB 4 Thunderbolt Cable (Black) on sale for $19.99. Shipping is free with Prime or on $35+ orders.
Thanks to Community Member violentleaf for sharing this deal.
Details:
USB-IF verified: Meets highest USB4 standards for reliable performance
Maximum specs: Up to 80Gbps bandwidth, 8K@120Hz video, 240W charging (PD 3.1 EPR)
Thunderbolt compatibility: Fully supports Thunderbolt 5, 4, and 3 (up to 80Gbps)
Blazing-fast data transfer: 80Gbps on USB4 devices; backward compatible with 20Gbps USB4 and older USB standards (3.2/3.1/3.0/2.0)
Video support: DisplayPort Alt Mode enables 8K@120Hz and 4K@480Hz for monitors, docking stations, gaming, editing, and streaming
High-power charging: 240W USB PD 3.1; backward compatible with 140W adapters (e.g., Apple, iPad Pro/Air) for fast charging of power-hungry devices
Broad device compatibility: Works with MacBook, USB-C/Thunderbolt laptops, tablets, and other USB-C or Thunderbolt-enabled electronics
Model: Cable Matters [USB-IF Certified] 80Gbps USB 4 Cable - 4.9ft, Supports Up to [8K@120Hz / 4K@480Hz Video, 240W Charging, 80Gbps Data Transfer] USB4 Cable, Compatible with Thunderbolt 5/4, MacBook
Deal History
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Sale Price does not include sale prices at Amazon unless a deal was posted by a community member.
I actually contacted their support team about this. According to them, The TID for this cable is 12667. They are licensing it through this other manufacturer but are working through certification with their own USB VID.
Per the USB-C specification table that discusses USB Type-C Standard Cable Assemblies that mentions a "≤ 0.8 m" limit for 40Gbps and 80Gbps cables:
The cable lengths listed in the table are informative and represent the practical lengths based on cable performance requirements.
There have existed 1.2m (4ft) certified 40/80Gbps cables on the market for a couple years now. A few 1.5m (4.9ft) cables have been certified in the last year. This cable is completely legitimate.
Is there still a certification process difference between USB-IF and Thunderbolt certified cables? My vague recollection is that USB-IF cables were only certified using specimens sent by the manufacturer, while the Thunderbolt cables were certified by random purchases by Intel on a contiguous basis. The effect being that the best specimens can be sent for USB-IF certification, while the typical specimen may be of lower quality; for Thunderbolt cables, the chances of getting a lower-grade specimen was lower. I had recently gone through six (new, appropriately specced) cables before finding one that worked with a USB-C laptop dock requiring USB 3.2 gen 2; the cable that worked ended up being a Thunderbolt 4 one, backward compatible with USB 3.2 gen 2.
Does not have thunderbolt logo on the cable.
Listing does not say it is a thunderbolt cable. It says it is thunderbolt compatible.
This means the cable has never passed the full set of thunderbolt tests.
USB-IF certification is not the same as thunderbolt certification.
Last edited by drivel February 2, 2026 at 10:22 PM.
Does not have thunderbolt logo on the cable.
Listing does not say it is a thunderbolt cable. It says it is thunderbolt compatible.
This means the cable has never passed the full set of thunderbolt tests.
USB-IF certification is not the same as thunderbolt certification.
Thunderbolt 4 *is* USB4. This cable is verified by a certified third party to meet the signal integrity and other characteristics outlined in the USB specifications, and therefore is functionally equivalent to a certified Thunderbolt cable.
Thunderbolt 4 *is* USB4. This cable is verified by a certified third party to meet the signal integrity and other characteristics outlined in the USB specifications, and therefore is functionally equivalent to a certified Thunderbolt cable.
No. Thunderbolt 4 and USB 4 are different standards and have different requirements to obtain certification. They are mostly compatible.
No. Thunderbolt 4 and USB 4 are different standards and have different requirements to obtain certification. They are mostly compatible.
The Thunderbolt 4 physical layer is USB4. In the context of a passive cable, if it has passed 40Gbps or faster certification it is compatible with Thunderbolt hardware. In what ways are they not compatible?
Last edited by violentleaf February 8, 2026 at 10:16 AM.
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The cable lengths listed in the table are informative and represent the practical lengths based on cable performance requirements.
There have existed 1.2m (4ft) certified 40/80Gbps cables on the market for a couple years now. A few 1.5m (4.9ft) cables have been certified in the last year. This cable is completely legitimate.
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Listing does not say it is a thunderbolt cable. It says it is thunderbolt compatible.
This means the cable has never passed the full set of thunderbolt tests.
USB-IF certification is not the same as thunderbolt certification.
Listing does not say it is a thunderbolt cable. It says it is thunderbolt compatible.
This means the cable has never passed the full set of thunderbolt tests.
USB-IF certification is not the same as thunderbolt certification.
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