The cisco sg500x 48p is a 48 port stackable managed gigabit ethernet switch with 4 enhanced small form factor pluggable sfp slots and optional 10 gigabit ethernet connectivity that provides a solid foundation for your current business applications as well as those you are planning for the future it offers power over ethernet plus true stacking advanced security quality of service energy saving technology eee ipv6 and network features that deliver the reliability and performance ne