D-Link 52-Port Gigabit Stackable SmartPro Switch Including 4 10GbE SFP+ Ports - 52 Ports - Manageable - Gigabit Ethernet, 10 Gigabit Ethernet - 10/100/1000Base-T, 10GBase-X - 3 Layer Supported - Twisted Pair, Optical Fiber - 1U High

Supports layer 3 switching for enhanced performance and usability Built-in power supply to ensure all components are being supplied with accurate voltage Features 52 networking ports to establish large network Optimize the performance of business networks with 10 Gigabit Ethernet connectivity Rack mounting enables you to organize wires & secure cables for professional installation