This product is either discontinued or we cannot get that from suppliers.
Cisco WS-C3850-12S-E Catalyst 3850 12 Port, Port 12 x 10/100/1000 SFP Optical ports, Maximum stacking number 9, Stack bandwidth 480 Gbps, Forwarding Performance 68.4 Mpps, Switching Capacity 68 Gbps, RAM 4 GB, Flash Memory 2 GB.
Cisco Catalyst 3850 Series switches integrate a variety of access, management, and connection media types into a compact footprint.