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华为(huawei)s5720s-28p-pwr-li-ac 24口全千兆企业级poe供电网络交换
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华为(huawei)s5720-52p-li-ac48口千兆网管型企业级交换机
华为(huawei)s5720s-28p-pwr-li-ac 24口全千兆企业级poe供电网络交换
华为(huawei)|s5720-ei系列增强型千兆以太交换机|s5720-32p-ei-ac|s5