(24)Port Layer 2 Managed Gigabit Switch with 4 shared SFP Slots Desktop Rackmount Switch with 24 copper ports supporting High Power 802.3at PoE injector function. (24)1000Mbps Gigabit RJ45 Ports (4) shared SFP slots. (Shared on Ports 21-24). Copper Ports 1-24 inject 56V DC power up to 30.8W per port to 802.3af at PoE devices up to max total output of 440W. Includes PoE Functions for Powered Devices Management: PD ALIVE Check. Scheduled Power Recycling, SMTP SNMP Trap Event Alert, PoE Schedule. Switch Fabric 48Gbps non-blocking, Throughput 35.7Mpps@64Bytes. Rackmount kit included. SFP modules sold seperate