Stackable switches that combine advanced features for growing businesses with easy operation and an affordable price. Energy-efficient design and EEE. The Cisco SG500-52 is a 52-port stackable managed Gigabit Ethernet switch, including 2 combination ports and 2 Small Form-Factor Pluggable (SFP) ports. It offers energy-efficient technology (EEE), true stacking, IPv6, and the advanced security and network features needed to support a growing business network. The switch is easy to manage and includes a limited lifetime warranty with next-business-day advance replacement.