Cisco SF500-24-K9-G5

24-port 10/100 + 4-Port Gigabit Stackable Managed Switches – SF500-24-K9-G5
24 10/100;2 10/100/1000 ports; 4 Gigabit Ethernet (2 combo* Gigabit Ethernet + 2 1GE/5GE SFP). 
Performance: Switching capacity 28.8 Gbps. 
Stacking : Up to 8 units in a stack. Up to 416 ports managed as a single system with hardware failover. 
Support Layer 3 (refer datasheet for more detail). 
QoS: Priority levels 4 : hardware queues, Scheduling: Priority queuing and weighted round-robin (WRR), Queue assignment based on DSCP and class of service (802.1p/CoS).