This product is either discontinued or we cannot get that from suppliers.
Allied Telesis AT-X510-52GTX-N1 Stackable, Switching Fabric 228Gbps, Forwarding Rate 130.9Mpps, Rack-mount, Max Power Consumption 86W, Max Heat Dissipation 293 BTU/h, Noise 45 dBA.
The Allied Telesis x510 Series of stackable Gigabit Layer 3 switches includes a full range of security and resiliency features, coupled with easy management, making them the ideal choice for network access applications.