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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

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UnverifiedCFexpress Type B卡需要USB 3.2 Gen2或雷电接口才能发挥（实际读取约1500-1700MB/s），若接USB 3.2 Gen1读卡器会被限制在约900MB/s以下，浪费CFexpress性能86% similar UnverifiedCFexpress卡本身有CFexpress 2.0(单/双通道)与不同容量规格，双通道Type B读取可达1700MB/s以上，读卡器需支持对应通道数才能发挥卡的满速85% similar Unverified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84% similar Unverified选购CFexpress卡应搭配对应协议的读卡器，Type B读卡器普遍支持USB 3.2 Gen2×2（20Gbps）才能跑满卡速，用普通USB读卡器传输会成为速度瓶颈83% similar Unverified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82% similar

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