The ADAM-6541ST-AE is an industrial Ethernet switch from Advantech, designed for use in challenging environments. It has 8 Gigabit Ethernet ports and 4 SFP slots, allowing for up to 12 gigabit links over fiber or copper. It offers a wide operating temperature range of -10°C to 60°C, four levels of port-based QoS, and two levels of 802.1Q VLANs for enhanced network security. The switch also supports Rapid Spanning Tree Protocol, loop prevention, Link Aggregation, and Quality of Service traffic prioritization. It has a rugged, compact IP30 metal casing, making it suitable to use in industrial or outdoor applications.