USB 3, USB4, Thunderbolt 3, and Thunderbolt 4 cables may use similar USB-C connectors, but they differ significantly in speed, charging power, display support, PCIe capability, and workstation compatibility. USB 3 is ideal for everyday data and charging products, USB4 supports advanced USB-C connectivity, Thunderbolt 3 remains useful for professional workflows, and Thunderbolt 4 provides a more consistent premium performance level. Brands and manufacturers should specify data speed, charging rating, cable length, compatibility requirements, and construction details clearly before developing or sourcing a cable product.
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