华三S5130S-28S-HPWR-LI交换机 LS-5130S-28S-HPWR-LI(L2以太网交换机主机,支持24个10/100/1000BASE-T PoE+电口,4个100/1000BASE-X SFP Combo口,4个1G/10G BASE-X SFP+端口,交直流供电)