Unverified85% confidenceFactTime unknown
USB-IF认证的线缆会标注具体规格（如USB4/40Gbps），可通过官方数据库查证；正规Thunderbolt 4线支持40Gbps传输+100W供电+视频输出三合一
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85%
Confidence
Long-term
Relevance
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Unverified雷电3/4线缆同时支持40Gbps数据、4K双屏或8K视频、100W PD充电，若需接雷电显示器或雷电扩展坞必须用雷电认证线而非普通USB-C线82% similarUnverifiedUSB4/雷电4扩展坞可通过单线实现40Gbps数据+双4K视频+100W供电，是新款USB-C笔记本一线到位方案的标准入口；非雷电设备需退回到多口USB-C Hub分工路线80% similarUnverifiedUSB4与Thunderbolt4功能高度重叠但USB4不强制40Gbps(可为20Gbps)，且USB4对雷电3外设的向下兼容非强制；接旧款雷电3设备优先选明确标注TB4的线缆更稳妥80% similar
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