Communications connector: 4 x RJ‑45 jacks with MDI‑X assignment 10/100 Mbps (half / full duplex), autopolarity, autonegotiation Network cable: A standard Ethernet cable can be connected to the Ethernet interface. However, to minimize electromagnetic interference, Siemens recommends a shielded Ethernet cable with a twisted pair (category 5) with a shielded RJ-45 connector at both ends Largest data packet: 1518 byte Smallest data packet: 64 byte Topology: Star and bus topology Operating temperature: 0 → 55 °C Dimensions (W x H x D) in mm: 72 (4 TE) x 90 x 55 mm Degree of protection: IP 20