SCALANCE XB004-1 UNMANAGED INDUSTRIAL ETHERNET SWITCH FOR 10/100 MBIT/S; FOR SETTING UP SMALL STAR AND LINE TOPOLOGIES; LED DIAGNOSTICS, IP20, 24 V AC/DC POWER SUPPLY, WITH 4X 10/100 MBIT/S TWISTED PAIR PORTS WITH RJ45 SOCKETS; 1 X 100 MBIT/S MULTIMODE GLASS FOC PORT WITH SC SOCKET; MANUAL AVAILABLE AS A DOWNLOAD