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Silver rack-mount network switch with 48 copper ports and two QSFP28 slots

Extreme Networks

Extreme Networks 5520-48T 48-port network switch

SKU CH-YPYR-60X6K MPN 5520-48T

Managed 48-port Gigabit switch with two QSFP28 stacking ports and base software included

  • Network Management TypeManaged
  • Primary Ports• 48 x 10/100/1000BASE-T ports ? Full / Half-Duplex (autosen

Model 5520-48T

Struck-through versions exist but are not stocked here.

  • 48 Gigabit RJ-45 ports for dense copper connectivity
  • 2 unpopulated QSFP28 stacking ports enable high-speed uplinks
  • Managed switch with cloud and on-premise control options
  • Fabric-enabled automation simplifies secure network provisioning
  • AI-driven analytics reduce mean time to resolution

48-Port Managed Switch for Enterprise Networks

The Extreme Networks 5520-48T is a managed switch delivering 48 autosensing 10/100/1000BASE-T ports with MACsec capability. It includes two unpopulated stacking/QSFP28 ports, a serial console port and a dedicated out-of-band management port. The platform runs Universal Hardware supporting multiple operating system choices and is managed through Extreme Platform ONE, ExtremeCloud IQ or ExtremeCloud IQ Site Engine.

Upgrading from Unmanaged

This switch replaces unmanaged gigabit switches that lack security features, stacking capability or cloud-based automation. The jump is worth it when you need MACsec encryption on copper links, fabric-enabled provisioning or AI-assisted troubleshooting to reduce mean time to resolution. It also suits teams moving from standalone units to a unified stack managed by a single control plane.

Limits of the Gigabit Copper and QSFP28 Interfaces

The 48 primary ports negotiate only up to 1000 Mbps, so multi-gigabit endpoints cannot exceed that ceiling on these RJ-45 connections. The two QSFP28 slots remain empty until populated with compatible transceivers or direct-attach cables, meaning uplink bandwidth depends entirely on the modules you source separately. Stacking capacity is restricted to the two dedicated ports.

Highlights

  • 48 Gigabit RJ-45 ports for dense copper connectivity
  • 2 unpopulated QSFP28 stacking ports enable high-speed uplinks
  • Managed switch with cloud and on-premise control options
  • Fabric-enabled automation simplifies secure network provisioning
  • AI-driven analytics reduce mean time to resolution

Specifications

BrandExtreme Networks
Network Management TypeManaged
Primary Ports• 48 x 10/100/1000BASE-T ports
? Full / Half-Duplex (autosensing)
? MACsec-capable
• 2 x Stacking/QSFP28 ports* (unpopulated)
• 1 x Serial console port (RJ-45)
• 1 x 10/100/1000BASE-T out-of-band management port
• 2 x USB A ports for management or external USB flash
• 1 x USB Micro-B console port
• 1 x VIM slot
Shipping weight0.91 kg
Package size592 × 556 × 147 mm

Other versions of this model

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Questions about this item

What rack space does the 5520-48T need for its 48 RJ-45 ports and two stacking modules?

The 5520-48T is a fixed 48-port switch designed for standard rack mounting; allow space for rear cable management of the 48 RJ-45 ports and two QSFP28 stacking ports.

Which cable type is required for the stacking ports so the link comes up without errors?

Use compatible QSFP28 transceivers and cables in the two stacking ports; the ports are unpopulated from the factory, so insert matching modules on both ends before enabling the stack.

What component should be checked first if a 10/100/1000BASE-T port stops passing traffic?

Inspect the RJ-45 connector and patch cable for damage or debris; the 48 copper ports are fixed on the chassis, so a faulty cable or dirty contact is the most common cause of link loss.

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