Unlike competitors" offering of individual models for GbE copper and fiber connectivity, the leading architecture employed by XGS-4528F delivers 24 1000Base-T copper interfaces along with standard RJ-45 connectors and 24 SFP slots in a 19" 1U enclosure. This unique benefit gives network designers the highest flexibility and cost saving in terms of equipment investment, network administration and system maintenance. With two high-performance 12G stacking ports on the back panel, over 10 units of XGS-4528F can be easily hard-stacked in a ring architecture, this feature makes XGS-4528F highly scalable and eases the network expansion and administration. Moreover, as the stacking ports come with every XGS-4528F unit, customers have no need to spend extra for stacking modules and stacking cables.