English(EN) What's the difference between USB 3.0 & 2.0 and which should you use?

USB 3.0 与 USB 2.0：速度、带宽和用例详解

作者 PulseAugur 编辑部 · [1 个来源] · 2026-07-27 17:30

与 USB 2.0 相比，USB 3.0 提供了显著更快的速度和更大的带宽，非常适合固态硬盘和 4K 摄像头等高需求设备。USB 2.0 端口通常是黑色或白色的，而 USB 3.0 端口通常是蓝色的，但性能是关键区别。USB 2.0 的速度高达 480 Mbps，足以满足鼠标和键盘等带宽和功耗要求最低的外围设备，其较低的制造成本确保了其持续存在。两种标准都向后兼容，但将 USB 3.0 设备插入 USB 2.0 端口会严重限制其性能。 AI

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Engadget TIER_1 English(EN) · [email protected] (Dave Meikleham) · 2026-07-27 17:30

USB 3.0 与 2.0 有何区别，您应该使用哪种？

The ports look the same, but one is much faster than the other.

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USB 3.0 与 2.0 有何区别，您应该使用哪种？

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