华三H3C S5130S-28S-UPWR-HI交换机 S-5130S-28S-UPWR-HI H3C S5130S-28S-UPWR-HI L2以太网交换机主机,支持24个10/100/1000BASE-T PoE++电口,支持4个1G/10G BASE-X SFP Plus端口