ZyXEL GS1920-48 48-Port Gigabit Smart Managed Switch with 4 SFP Uplinks and PoE+ (375W)

Imagine a growing office where every desk needs a reliable wired connection, and IP cameras and access points must be powered without extra adapters. The ZyXEL GS1920-48 smart managed switch steps in—a 48-port Gigabit workhorse with four SFP uplinks and PoE+ on all ports, delivering up to 375W of power budget. It's built for IT administrators who need VLAN segmentation, QoS, and security without the complexity of a full enterprise chassis.

Key specifications

• 48 x 10/100/1000Base-T Gigabit Ethernet ports with IEEE 802.3af/at PoE+ (375W total budget)
• 4 x Gigabit SFP uplink ports for fiber connectivity
• 104 Gbps switching capacity and 77.38 Mpps forwarding rate
• 16K MAC address table and jumbo frame support up to 9 KB
• Layer 2 features with Layer 3 Lite static routing
• VLAN support: 802.1Q, up to 4K VLANs
• QoS with 8 priority queues per port
• Management: Web GUI, CLI (console, Telnet, SSH), SNMP
• Security: port security, 802.1X, storm control, DoS prevention
• 1U rack-mountable form factor with smart fan and internal power supply

Why choose it

The GS1920-48 balances performance and ease of use. Smart managed features give you the control you need for a busy network, while the intuitive web interface keeps setup straightforward. PoE+ on all 48 ports means you can deploy IP phones, cameras, and wireless APs without separate power injectors, simplifying cabling and reducing clutter. The four SFP uplinks let you connect to a core switch or server over fiber for high-speed backbone links.

Ideal use cases

• Small to medium business networks requiring high-density Gigabit access with PoE for endpoints
• Surveillance deployments where multiple PoE IP cameras need centralized power and management
• VoIP phone systems needing QoS to prioritize voice traffic
• Branch offices connecting back to headquarters via fiber uplinks

Good to know

The switch supports a wide range of management options, so you can integrate it into existing network monitoring tools via SNMP. Its smart fan adjusts speed based on temperature, keeping noise low in office environments. With a 1U rack-mount design, it fits neatly into standard server racks. The internal power supply means no external power brick to manage.