Detail overview
   Zyxel - Gs1920-48hp - Switch - 48 Ports - Managed - Desktop, Rack-mountable (gs1920-48hp) : 
 Key Features : 
  Device Type : Switch - 48 Ports - Managed - Stackable 
   Enclosure Type : Desktop, Rack-mountable 
   Subtype : Gigabit Ethernet 
   Ports : 44 X 10/100/1000 (poe+) + 2 X Gigabit Sfp + 4 X Combo Gigabit Sfp 
   Power Over Ethernet (poe) : Poe+ 
   Poe Budget : 375 W 
   Performance : Switching Capacity : 100 Gbps ¦ Forwarding Performance : 74.4 Mpps 
   Mac Address Table Size : 16k Entries 
   Routing Protocol : Igmpv2, Igmp, Static Ip Routing, Igmpv3 
   Remote Management Protocol : Snmp 1, Rmon 1, Rmon 2, Rmon 3, Rmon 9, Snmp 3, Snmp 2c, Http, Ssh, Ssh-2 
   Encryption Algorithm : Ssl 
   Authentication Method : Secure Shell (ssh), Radius, Tacacs+, Secure Shell V.2 (ssh2) 
   Features : Flow Control, Layer 2 Switching, Arp Support, Vlan Support, Igmp Snooping, Syslog Support, Port Mirroring, Weighted Round Robin (wrr) Queuing, Mac Address Filtering, Broadcast Storm Control, Ipv6 Support, Ip Address Filtering, Multicast Storm Control, Unicast Storm Control, Firmware Upgradable, Weighted Fair Queuing (wfq), Zyxel Istacking Technology, Spanning Tree Protocol (stp) Support, Rapid Spanning Tree Protocol (rstp) Support, Multiple Spanning Tree Protocol (mstp) Support, Dhcp Snooping, Access Control List (acl) Support, Quality Of Service (qos), Radius Support, Mld Snooping, Ipv4 Support, Lldp Support, Dhcp Relay, Link Aggregation Control Protocol (lacp), Port Security, Ntp Server, Ip-mac Binding, Dhcp Client, Energy Efficient Ethernet, Multicast Vlan Registration (mvr), Dual Firmware Images, Strict Priority Queuing (spq), Loop Prevention, Port Isolation, Class Of Service (cos), Tagged Vlan, Generic Vlan Registration Protocol (gvrp), Igmp Proxy, Diffserv Code Point (dscp) Support, 1.5mb Packet Buffer, Errdisable Recovery, Zyxel Discovery Protocol (zdp), Zyxel One Network (zon), Igmp Filtering, Igmp Throttling 
   Compliant Standards : Ieee 802.3, Ieee 802.3u, Ieee 802.1d, Ieee 802.1q, Ieee 802.3ab, Ieee 802.1p, Ieee 802.3af, Ieee 802.3x, Ieee 802.3ad (lacp), Ieee 802.1w, Ieee 802.1x, Ieee 802.1s, Ieee 802.1ab (lldp), Ieee 802.3at, Ieee 802.3az 
   Status Indicators : Power, System, Link/activity 
 Expansion / Connectivity : 
   Interfaces : 44 X 1000base-t - Rj-45 - Poe+ ¦ 6 X - Sfp ¦ 4 X 1000base-t - Rj-45 
 Power : 
   Power Device : Internal Power Supply 
   Voltage Required : Ac 120/230 V ( 50/60 Hz ) 
   Power Consumption Operational : 503 Watt