ETHERNET SWITCH / FAST-ETHERNET; COMPACT; AS STANDARD IEE 802.3; INDUSTRIAL MOUNT RAIL DIN; WITH STORE-AND-FORWARD-SWITCHING; 8 WITH BEING DOORS 1 A DOOR UPLINK (100BASE-FX, MM / SC), 1 UPLINK PORT (10 / 100BASE-TX, RJ45) AND 6 DOORS STANDARD (10 / 100BASE-TX, RJ45); WITH INTERFACES V.24 RJ11 USB AND CONNECTOR ADAPTER ACA21-USB; COMPORTA NETWORKS TP (TWISTED PAIR) TO LENGTH 100M, MULTIMODE FIBER (MM) 50/125 MICROMETRO 8DB SIZE LINK BUDGET THE 1300NM (A = 1DB / KM RESERVATION 3DB, B = 800MHZ X KM) LENGTH 5000M, MULTIMODE FIBER (MM) 62.5 / 125 MICROMETER 11DB SIZE LINK BUDGET THE 1300NM (A = 1DB / KM, 3DB RESERVATION, B = 500MHZ X KM) LENGTH 4000M; POWER 12/24/48 VDC (9.6 A 60 VDC) AND 24 VAC (18 VAC 30); DEGREE OF PROTECTION IP 20; ENHANCED VERSION OF SOFTWARE