S1720-52GWR-4P-E (48个10/100/1000Base-T以太网端口,4个千兆SFP,含license,交流供电) 华为交换机 S1700/2700 S1720-52GWR-4P-E (48个10/100/1000Base-T以太网端口,4个千兆SFP,含license,交流供电)
