GS-1026 V21)-Supports 240/100/1000Mbps Gigabit Ethernet ports and 2 10/100/1000Mbps SPF slots2)-Supports auto-MDI/MDIX crossover detection and auto-correction3)-Supports 10/100Mbps full/half duplex modes and 1000Mbps full duplex mode4)-Supports wire-speed package filtering and forwarding rates5)-Supports store-and-forward architecture with fragment and CRC error package filtering6)-Supports IEEE 802.3az Energy Efficient Ethernet7)-Support 8K MAC address table & 9KB jumbo frame8)-Designed with fan-less quite operation & 19-inch rack-mountable metal case9)-Plug and play, no installation required