S1720-28GFR-PWR-4P 全网管 1U (24个10 100 1000Base-T以太网端口,4个千兆SFP,PoE+,370W POE交流供电) S1720-28GFR-PWR-4P 全网管 1U (24个10 100 1000Base-T以太网端口,4个千兆SFP,PoE+,370W POE交流供电)
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