The 19” EKI-7428G and EKI-2428G rack-mount Ethernet product line includes managed and unmanaged Ethernet switches with as many as 28 ports. Equipped with optional copper, PoE and fiber connections, these switches offer high flexibility and can deal with most network management applications. Models with a wide temperature range (-40° ~ 75°C) and rugged design are designed specifically for field sites in harsh environments. Models that operate in a standard temperature range are for sites with more gentle conditions. The models with fiber connection can extend the network over a greater distance and can be used where there is a high level of electromagnetic interference.