Zyxel 48 Port Gigabit Switch Smart Managed Rackmount 2 SFP Ports VLAN, IGMP, QoS Network Ethernet Hub [GS1900 48]

HIGH-DENSITY GIGABIT SWITCHING WITH SFP UPLINKS: 48x 10/100/1000 Mbps RJ-45 ports and 2x GbE SFP slots deliver a full 100 Gbps switching capacity and 74 Mpps forwarding rate SMART FAN TEMPERATURE-CONTROLLED COOLING: Built-in smart fan adjusts speed based on device temperature (23-41 dBA range) for near-silent operation with reliable thermal control SFP FIBER UPLINKS FOR LONG-DISTANCE LINKS: 2x GbE SFP slots support optional fiber transceivers for 100M or Gigabit inter-switch connections beyond copper cable distance limits SMART MANAGED LAYER 2 CONTROL: Web GUI and ZON Utility provide VLAN (up to 4K), QoS with 802.1p priority, IGMP Snooping, LACP, STP/RSTP/MSTP, DoS prevention, and SNMP v1/v2/v3 for full network control HIGH-DENSITY CAPACITY WITH IPv6 SUPPORT: 525 KB buffer, 8K MAC table, and 9K jumbo frame support handle demanding multi-device workloads with full IPv6 dual-stack for network growth