Unverified85% confidenceDecision RuleTime unknown

购买大容量U盘/存储卡警惕扩容盘（虚标容量），到手用H2testw或F3等工具做全盘写入校验，非正规渠道低价大容量产品尤其高危

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Unverified购买大容量U盘务必用H2testw或FastCopy全盘测试，防止买到虚标扩容盘（实际8GB伪装成256GB），非一线品牌散货尤其高发82% similar Unverified不要在非正规渠道购买大容量存储卡，扩容假卡（虚标容量）泛滥，标称256GB实际仅几十GB，需用H2testw等软件实测容量后再存重要数据76% similar Unverified不要盲目追求超大容量单卡（如512GB以上），单卡容量过大意味着数据损坏时全部素材同时丢失风险高，专业拍摄建议2-3张中等容量卡分散风险72% similar

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