>S5710-28C-PWR-EI-AC S5710-28C-PWR-EI-AC(24个10/100/1000Base-T以太网端口,4个复用的千兆Combo SFP,4个万兆SFP+,PoE+,双子卡槽位,含1个580W交流电源)<br>S5700-52C-PWR-EI S5700-52C-PWR-EI(48个10/100/1000Base-T以太网端口,PoE+,单子卡槽位,不含电源)<br>S5710-52C-PWR-EI S5710-52C...