S1720-52GFR-PWR-4P (48个10/100/1000Base-T以太网端口,4个千兆SFP,PoE+,370W POE交流供电) S1720-52GFR-PWR-4P (48个10/100/1000Base-T以太网端口,4个千兆SFP,PoE+,370W POE交流供电)
迈瑞通