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老旧笔记本/主板只有USB2.0或系统为Windows7时，不建议买最新WiFi6E网卡：USB2.0跑不出速率，且WiFi6/6E网卡厂商多已不提供Win7驱动，会出现无法安装的情况

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无线网络适配器category

Related Claims

Unverified台式机主板本身已有WiFi6/千兆网口时，不必额外购买USB网卡，USB方案速率和延迟均不如板载或PCIe网卡79% similar Unverified家里没有支持WiFi 6E/7终端设备（手机、笔记本网卡）时，买高端WiFi 7路由无法体现速率优势，终端不支持则新协议形同虚设71% similar UnverifiedUSB无线网卡选WiFi6（AX）需确认路由器也支持WiFi6，否则速率回落到WiFi5水平，两端不匹配无法发挥71% similar UnverifiedUSB无线网卡想跑满WiFi6（AX）实际速率需支持160MHz频宽和USB3.0接口，仅标WiFi6但用USB2.0接口的产品实际速率远低于宣传值71% similar Unverified不要为老旧只有USB2.0接口的电脑购买AX1800/千兆网卡，接口带宽是瓶颈，钱花在高标准上无意义，选USB2.0对应的百兆/WiFi5即可70% similar

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