Zyxel&nbsp;24 Port Gigabit Switch, Easy Smart Managed, Rackmount, Fanless, w/2x SFP Fiber Uplinks (GS1900-24) Fast networking performance with 24 Gigabit Ethernet ports and non-blocking full bandwidth of 2,000 Mbps per port Get up and running in minutes: The intuitive web-based set-up wizard enables simple and fast configuration and management, even for non-technical staff Standard 19" rackmount and fanless design ensures quiet operation and higher reliability over time Advanced features like VLAN, QoS, IGMP Snooping, Link Aggregation (LAG), IPv6 and DoS prevention enable better security and management Lifetime hardware warranty, free firmware upgrade support and free technical support for long-term assurance 24-port GbE Smart Managed Switch with GbE Uplink Input voltage of AC 	100 - 240 V AC, 50/60 Hz Max. power consumption(watt) 	16 Item 	Dimensions (WxDxH)(mm/in.) 	440 x 131 x 44/17.32 x 5.16 x 1.73