This product is either discontinued or we cannot get that from suppliers.
Cisco Catalyst WS-C3850-48T-E, Network Ports-48, Twisted Pair, Gigabit Ethernet, Network 10/100/1000Base-T, Expansion Slots-1, Standard Memory 4 GB, DRAM, Flash Memory 2 GB, MTBF 303660 Hour, Input 110 V AC, 220 V AC, Power Supply, Black - Gray, Rack-mountable.
The Cisco® Catalyst® 3850 Series is the next generation of enterprise-class stackable access-layer switches that provide full convergence between wired and wireless on a single platform.