D-Link Ports: 24 Gigabit PoE electrical ports + 2 Gigabit optical ports, backplane bandwidth: 52G, packet forwarding rate: 38.7M, PoE power: single port maximum 30W, machine maximum power 370W, power supply: AC 100-240V built-in Power supply, size: 440x208x44mm (iron case), standard rack type, non-network managed PoE switch, port 6KV lightning protection, support flow control switch, LCD display PoE status