This product is either discontinued or we cannot get that from suppliers.
Cisco WS-C3850-48U-E Catalyst 3850 48 Port, 1 RU, Port 48 x 10/100/1000 ports with UPoE, PoE Power 800W, Stack bandwidth 480 Gbps, Forwarding Performance 130.95 Mpps, Switching Capacity 176 Gbps, RAM 4 G, Flash Memory 2 G.
The Cisco Catalyst 3850-48U-E is the next generation of enterprise-class stackable Ethernet and Multigigabit Ethernet access and aggregation layer switches that provide full convergence between wired and wireless on a single platform.