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The CM06EA20-27S is a Gigabit-Ethernet switch from Hirschmann. It has a total of twenty-seven ports, twenty of which are Gigabit Ethernet (10/100/1000Base-T) and seven of which are SFP (1000 Mbps) ports. It is managed, unsupported, and includes two power supplies for redundancy. It also has advanced features such as Layer 2 Switching, IPv4/IPv6, VLANs, QoS, Rapid Spanning Tree and port security. It is designed for harsh industrial environments and is able to operate reliably in temperatures ranging from -10°C to +60°C and in environments up to 95% non-condensing relative humidity. It is suitable for a range of applications, such as remote power distribution, security monitoring, and PLC and HMI communication.