9000B Backplane and 4 slot chassis. Rugged Industrial Enclosure with DIN-Rail, Panel Mount and rackmount options. Full IEEE 802.3 compliance. Extended environmental specifications. -20°C to 70°C operating temperature. -40°C to 85°C storage temperature. Store-and-forward technology. Redundant power inputs (10-30 VDC). 4,096 MAC addresses. Standard managed switch features. IGMP auto configuration. Link aggregation.