zyxel gs1900-2426-port gigabit web smart switch 24x gigabit metal + 2 sfp, ipv6, 802.3az (green), easy set up wizard, fanless, 19 &, rackmountoverviewthe zyxel gs1900 series of 8/16/24/48-port gbe smart managed switch with gigabit speed and managing essential functions bring your business more fexibility and network connectivity. the 1900 series consists of eight (8) models-the 8-gs1900, gs1900-8hp, gs1900-16-24e gs1900, gs1900-24-24hp gs1900, gs1900-48 and gs1900-48hp. providing gbe switches with powersaving functions, fanless design and full ipv6 support ensure your network to be ready for future expansions. in addition, the poe models gs1900-8hp/24hp/48hp gigabit switch complies with the ieee 802.3at power over ethernet (poe) plus standard. the complete gs1900 series has been designed with useful features and advanced performances that empower your networks with speed and security as well as silent operation in your environments.?? 10/100/1000 mbps gbe ports?? easy browser-based switch management?? quick and easy set up wizard?? advanced network error prevention features (loop protection, dual images, storm control, dos and ssl)?? fanless design?? green ethernet ieee 802.3az support and intelligent zyxel green featuresspecificationsport density10/100/1000base-t fixed?? 2410/100/1000base-t poe, fixed?? -sfp 100/1000 mbps?? 2performanceswitching capacity (gbps)?? 52switch forwarding rate (mpps)?? 39packet buffer (byte)?? 525 kmac address?? 8 kjumbo frame (byte)?? 9kpowerinput voltage of ac?? 100-240 v ac, 50/60 hzmax. power consumption (watt)?? 16poe power budget (watt)?? -physical specificationsitem dimensions (wxdxh) (mm)?? 440 x 131 x 44item weight (kg)?? 2.09packing dimension (wxdxh) (mm)?? 561 x 217 x 82packing weight (kg)?? 2.85environmental specificationsoperating temperature?? 0? c to 50? cstorage temperature?? -40? c to 70? coperating humidity?? 10% to 95% (non-condensing)mtbf (hr)?? 432673heat dissipation (btu/hr)?? 55