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读卡器和USB接口是速度瓶颈：UHS-II卡需搭配UHS-II读卡器和USB3.0以上接口才能跑满速度，用旧读卡器或USB2.0接口传输会被限制在30-40MB/s左右

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Unverified选读卡器要匹配卡的接口，UHS-II卡需搭配UHS-II读卡器+USB3.0以上接口才能跑满速度，套装赠送的USB2.0读卡器会成为传输瓶颈（上限约40MB/s）94% similar Unverified读卡器实际速度还受电脑USB接口协议、数据线规格双重限制；用了标称20Gbps读卡器却配USB 3.0线材，速度依旧上不去，需确认线材支持对应带宽89% similar UnverifiedUSB 3.2接口读写速度受限于USB通道，实测顺序读写通常在350-400MB/s级别，远低于NVMe外置SSD的速度，追求极致传输速度的用户不适合88% similar Unverified实际顺序读写速度受限于USB 3.2 Gen2的10Gbps带宽上限，在仅有USB 3.0接口的老设备上速度会大幅缩水至约400-500MB/s左右86% similar

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