52-Port Gigabit Stackable Managed Ethernet Switch with 10GbE Uplinks (DGS-1530-52) | 48x 1GbE Ports + 4x 10GbE SFP+ Ports, L3 Lite, VLANs, Rackmount, Follows NDAA/TAA

This switch has 48 Gigabit ports and 4 10G SFP+ ports for uplink. It supports physical stacking, redundant power supply, ZTP, ERPS, and IEEE 802.1ag and ITU-T Y.1731 standards.

• The description claims support for Ethernet Ring Protection Switching (ERPS).
• The description claims support for IEEE 802.1ag for Connectivity Fault Management.
• The description claims support for ITU-T Y.1731 for Delay Measurement.