The Siemens 6GK1105-2AC10, part of the SCALANCE X-100 series, is a robust unmanaged Industrial Ethernet switch designed for reliable networking at the machine level. It provides a cost-effective solution for setting up small star or line topologies in industrial environments. This compact switch features five 10/100 Mbit/s RJ45 ports for connecting terminal devices and two 100 Mbit/s multimode glass fiber optic ST/BFOC ports for bridging longer distances up to 5 km. Its rugged metal enclosure, redundant power supply input, and signaling contact ensure high operational reliability, making it ideal for use in control cabinets and harsh industrial settings.