- Club3D has released a passive USB4 cable over 9 meters long, the CAC-2509, which does not have official certification.
- The cable supports speeds of up to 20 Gbps and 100W of power, violating its specifications. USB Implementers Forum.
- At the same time, the CAC-2507 adapter allows the connection of two USB-C cables, paving the way for problems in the reliability of data transmission.
The 9-meter problem
Covering long distances with USB-C technology has always been a minefield for network and hardware engineers. According to a recent analysis by Notebookcheck , the market is moving in a gray area of specifications. The industry has traditionally relied on recommendations rather than strict length limits for cables. Club3D is trying to break the bank with a passive cable that is almost 30 feet long, or about 9 meters. This means it carries the signal without active amplifiers, which dramatically increases the chance of packet loss.
Why is USB-IF rejected?
The main thorn in the side of the new CAC-2509 cable is its inability to pass the USB Implementers Forum 's accredited labs . The organization requires specific testing protocols, and the 100W rating doesn't align with official power standards. The USB-IF strictly defines profiles at 60W or 240W, based on amperage rather than a fixed wattage. Since a test requires 75 to 100 cable samples, the cost to a company is enormous when the final product is already selling for over $100 on the market.
The adapter and the risks
In addition to the extra-long cable, the CAC-2507 adapter was also released that joins two USB-C cables together. This approach clearly violates the 40 Gbps signal integrity specifications. The manufacturer itself recommends using quality cables like the CAC-1570, indirectly warning about disconnections. In our own experience at TechNoid with gaming peripherals , excessively long cables or joints usually result in failure.
Our opinion at TechNoid
Club3D's move shows exactly what happens when marketing tries to bypass the physics of networks. A 9-meter passive USB4 cable is a technical achievement on paper, but a recipe for disaster in practice. If you really need stable high-speed data transfer, stay away from uncertified solutions and prefer active fiber optic cables. Patents with adapters and passive beasts will only fill you with nerves and lost files.
Frequently Asked Questions about long USB4 cables and accessories
Is the new Club3D CAC-2509 cable certified?
No, the cable is not certified by the USB-IF due to length and 100W power limitations.
What speeds does the 9-meter passive cable support?
It supports a maximum data transfer speed of up to 20 Gbps despite being called USB4.
Can I use the CAC-2507 adapter to join two cables?
Yes, the adapter allows the connection of two USB-C cables, but it violates the official specifications of the standard.
How much does the CAC-2509 cable cost on the market?
Although the manufacturer has not announced an official price, early retailers are pricing it at over $100.
Why doesn't USB-IF recognize power ratings at 100W?
The organization sets requirements based on amperage to voltage rather than fixed power numbers.
Are very long USB-C cables reliable for gaming?
In practice, they often prove unstable, causing disconnections in demanding peripherals and devices.
What alternatives do I have if I need a USB connection over a long distance?
The best solution is to use active fiber optic cables that maintain signal integrity without loss.
