Reference:
NS3500-24T-4C-V2
Copper 10/100/1000Base-T 24-Port Managed Gigabit Ethernet Switch with 4 shared SFP ports (compatible with S20/S25 series, S30/S35 series). Layer 2 with advanced features. 48 Gbps. Working temperature: 0 to 50ºC. Power: 220 VAC. SFP modules not included.