S1720-52GWR-PWR-4X Web管理 1U (48个10 100 1000Base-T以太网端口,4个万兆SFP+,PoE+,370W POE交流供电) S1720-52GWR-PWR-4X (48个10/100/1000Base-T以太网端口,4个万兆SFP+,PoE+,370W POE交流供电)
迈瑞通