Designed for on-board or on-ground train control monitoring system and train information management system applications, the MSG 3U connector complies with EN 45545, reportedly the most stringent smoke and fire standard. It is one of the few connectors on the market that have been specially developed for 3U racks. The MSG 3U is shielded inside a metal hood on the plug and receptacle sides for protection against electromagnetic interference and signal degradation. The connector is available in three layouts: with 29 and 41 standard contacts and with up to five Quadrax Ethernet contacts. The Quadrax version can transmit signals at speeds of up to 100 Mbps and the design allows users to select grounded or ungrounded contacts.