This product is either discontinued or we cannot get that from suppliers.
Cisco WS-C3850-24S-E Catalyst 3850 24 Port, 1 RU, Network C3850-NM-4-1G, C3850-NM-2-10G, 24 × 10/100/1000 SFP Optical ports, Stack bandwidth 480 Gpbs, RAM 4 GB, Flash Memory 2 GB.
Cisco next generation Catalyst WS-C3850-24S-E is stackable enterprise level switch and integrated with 24 SFP ports in IP service feature set. WS-C3850-24S-E enables sophisticated layer 2-4 switching capability by providing the optimal solution.