descriptiongs1920v2 series products with a new stylish look build on the success of the gs1920 series bestsellers and enable cloud management with zyxel nebulaflextm technology.the gs1920v2 series is compatible with the zyxel nebulaflextm solution, so you can switch between stand-alone mode and unlicensed device management via the nebula cloud at any time with just a few clicks.the gs1920v2 series products are the ideal solution for small and medium-sized organizations and their unique combination of ports guarantees a seamless future expansion of your network.perfectly quiet operationclear signaling by means of diodeseasier power to more deviceszyxel one networkdesigned with an emphasis on longevitytechnical specificationsproduct name24-port gbe smart managed switchswitch classsmart managedtotal port count28100/1000 mbps24gigabit combo (rj-45/sfp)4gigabit sfppoe ports24total poe budget (watts)375high power poe 802.3atyesswitching capacity (gbps)56forwarding rate (mpps)42packet buffer (byte)1.5mmac address table16kflash/ram32 mb/256 mbinput100 to 240 v ac, 50/60 hzmax. power consumption (watt)463.5itemdimensions (wxdxh) (mm/in.): 441 x 270 x 44/17.36 x 10.63 x 1.73weight (kg/lb.): 3.8/8.38included accessoriespower cordrack mounting kitfanlessoperatingtemperature 0? c to 50? c/32? f to 122? fhumidity 10% to 90% (non-condensing)storagetemperature -40? c to 70? c/-40? f to 158? fhumidity 10% to 90% (non-condensing)mtbf (hr)638, 691heat dissipation (btu/hr)1, 580.54acoustic noise @ 25? c (dba)27.2