5 port gigabit desktop switch complies with ieee8023 ieee8023u and ieee8023ab standards supports auto mdimdi x crossover detecting and auto correction supports full and half duplex for 10100mbps and full duplex for 1000mbps wire speed packet filtering and forwarding rate store and forward architecture filters fragment crc error packets supports jumbo frames up to 9k bytes supports ieee8023az energy efficient ethernet function supports optional power supply