The USB-C standard, introduced by the USB-IF consortium on August 11, 2014, was designed to unify charging, data transfer, and video output. However, the physical connector design does not dictate the performance of the cable, leading to significant variations in speed and power delivery capabilities.
Data transfer speeds vary drastically between cables. While basic USB 2.0 cables operate at 480 Mbps, high-end cables supporting USB4 or Thunderbolt can reach 40 Gbps or even 80 Gbps. Similarly, power delivery ranges from 60 watts to 240 watts, depending on whether the cable includes an e-marker chip to communicate its specifications.
Market confusion is exacerbated by evolving naming conventions. For instance, the 5 Gbps standard was rebranded multiple times, appearing as USB 3.0, USB 3.1 Gen 1, and USB 3.2 Gen 1. Manufacturers often use these newer labels on packaging without changing the underlying hardware, making it difficult for consumers to identify actual performance.
Safety issues prompted industry changes. In February 2016, an engineer discovered a faulty cable that damaged hardware, leading Amazon to ban non-compliant USB-C accessories in March 2016. Today, the EU mandates USB-C for charging various electronics, with requirements extending to laptops by April 2026, though internal cable quality remains unregulated.
