D-Link 54-Port Lite Layer 3 Stackable Managed Gigabit Switch (DGS-3130-54TS)

• 48 x 10/100/1000BASE-T ports
• 2 x 10GBASE-T and 4 x 10G SFP+ ports provide all the uplink capacity your network needs
• Premium L2 and L3 features effortlessly improve network efficiency and reduce unnecessary data transfer
• High redundancy features to provide professional-grade reliability and a longer product life:
  — Dual power inputs
  — Ethernet Ring Protection Switching with <50ms recovery time
  — 6 kV surge protection protects the device and those connected from unexpected surges
  — 802.1d/w/s Spanning Tree Protocol avoids potentially network crippling loops
• RIP/RIPng and OSFPv2/v3 dynamically maps out your network, aiding data to get to its destination via the fastest route possible.
• Expand capacity in a flash with physical stacking up to 9 units
• 80 Gbps per device physical stacking bandwidth
• The Smart Fan self-adjusts accordingly to maintain optimal operating temperatures

Datasheet-DGS-3130 Series.pdf