Detail overview CISCO - Expansion Module - 4 Ports (C3850-NM-4-10G). Key Features : Device Type : Expansion Module Form Factor : Plug-in Module Ports Qty : 4 Ports Data Link Protocol : Gigabit Lan, 10 Gigabit Lan Data Transfer Rate : 10 Gbps Designed For Models : Ws-c3850-48t, Ws-c3850-48p, Ws-c3850-48f, Ws-c3850-48u, Ws-c3850-24xu, Ws-c3850-12x48u, Ws-c3850-12xs, Ws-c3850-24xs Condition : New Factory Sealed. availability : In Stock. our Warranty : 30 Days.