D-Link 52-Port 10-Gigabit Smart Managed PoE Switch - 52 Ports - Manageable - 3 Layer Supported - Modular - 57.20 W Power Consumption - 370 W PoE Budget - Twisted Pair, Optical Fiber - PoE Ports - Life... - DGS-1250-52XMP-6KV

48 x 10/100/1000BASE-T Gigabit Ethernet PoE ports
4 x 10G SFP+ ports for high speed uplink connections
Robust 370W PoE Power Budget
Lite L3 Static Routing for increased network efficiency
Advanced security features such as Access Control List, IMPB, and 802.1X Authentication enhance network security and help protect the network
Dual Image & Dual Configuration for reduced downtime
Supports STP/RSTP/MSTP for fault tolerance
Full CLI for for easy management
QoS for prioritization of critical network traffic
6kV Surge Protection on all Gigabit Ethernet access ports