930175100 is a Hirschmann MACH100 Industrial Managed 10/100 Ethernet Switch that's equipped with four RJ45 ports, which offers maximum data transfer speeds of up to 100 Mbps. It has an IP30-rated rugged metal housing that is resistant to dust and EMC. The MACH100 comes with an array of features that include auto MDI/MDI-X duplex operation, 8k MAC address auto learning and aging, QoS, port mirror, and an IP Address Lock to protect against unauthorized access. It also supports a variety of protocols such as 802.1P, 802.1Q VLAN, 802.1X, SNMP, IGMPv1/v2, and HTTPS for secure access.