943434002 Hirschmann RS20-0400M2M2SDAP Mananaged Industrial Ethernet Rail Switch with 4 ports including 2 Fast Copper ports RJ45 (100 Mbps), and 2 Fast Fiber Multi-mode SC ports (100 Mbps FX). 9.6-60 VDC and 24 VAC redundant inputs. Operating Temperature of 32F-140F. Fanless Design and Software Layer 2 Professional.