Unverified85% confidenceCautionTime unknown
笔记本仅有USB 3.0（5Gbps）接口时，不建议购买CFexpress读卡坞，上行带宽瓶颈会把1700MB/s的CFe卡限制到约500MB/s，浪费高速卡价值
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85%
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Long-term
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Unverified不建议给笔记本仅有USB-A（USB 2.0）接口的老设备配高速CFexpress读卡器，USB 2.0上限约40MB/s，会让1700MB/s的卡跑成龟速，属于无效投资87% similarUnverified读CFexpress Type B卡必须选USB 3.2 Gen2（10Gbps）或雷电3/4接口读卡器，USB 3.0（5Gbps）会将1700MB/s的卡速拦腰砍至约450MB/s，浪费卡性能86% similarUnverifiedUSB 3.2 Gen1接口理论带宽5Gbps(实测约450MB/s)，读UHS-II SD(300MB/s)足够，但读CFexpress会严重限速；按最快的卡选接口82% similarUnverified读取CFexpress Type B卡需选USB 3.2 Gen2 (10Gbps)以上接口，USB 3.0(5Gbps)读卡器会成为瓶颈，无法跑满CFexpress卡1700MB/s的读取速度82% similarUnverified老式CF卡（CompactFlash）与CFexpress不兼容，需专门的CF读卡器，CF卡最高速度约160MB/s，用USB 3.0读卡器即可满足82% similar
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