4x 100/1000Base-X SFP

L2 layer PoE switches - DCN S4600-28P-P-SI, 24x 10/100/1000Base-T with PoE + (370W) RJ45 + 4x 100/1000Base-X SFP, AC power supply, 1U, designed for use in telecommunications networks, ISPs, and also in structural installations of small business and enterprise, CCTV, WiFi;