Industrial Networking FiberINTERFACES Industrial Ethernet Rail Family MICE EAGLE System Wireless LAN Rail Video OCTOPUS System IP67 MACH 3000 MACH 4000 Chassis Media modules Transceiver for media module Accessories LION Control Room Switch Network Management System Accessories Powerlink Router OpenRail System Product Product Title Product Description Order Number M4-AIR Fan plug-in for Hirschmann MACH 4002 basic device, four redundant fans 943 869-001 M4-POWER basic device Hirschmann M4-POWER for taking up to three Power supply plug-in M4-P-xx enabled the external and redundant power supply of Hirschmann MACH 4002 basic device 943 874-001 M4-P-AC/DC 300 W Power supply plug-in for Hirschmann MACH 4002 basic device, 943 875-001 M4-P-24VDC 300 W Power supply plug-in for Hirschmann MACH 4002 basic device with two inputs for redundant power supply 943 876-001 M4-P-48VDC 300 W Power supply plug-in for Hirschmann MACH 4002 basic device with two inputs for redundant power supply 943 877-001 M4-S-AC/DC 300W Plug-in power supply for Hirschmann MACH 4002 switch chassis, 943 870-001 M4-S-24VDC 300W Power supply plug-in for Hirschmann MACH 4002 basic device with two inputs for redundant power supply 943 871-001 M4-S-48VDC 300W Power supply plug-in for Hirschmann MACH 4002 basic device with two inputs for redundant power supply 943 872-001