4-port pci bus 10/100mbps fast ethernet server adapter - advanced fast ethernet connections for servers - network interface card with 4 x 10/100mbps utp ports - auto-negotiating 10/100mbps data transmission / port (nway) - full-duplex to double speed to 200mbps / port - 4-port load-sharing increases bandwidth to 800mbps - fault tolerance for mission critical server connections - ieee 802.3x flow control - drivers for windows nt 4.0 with service pack 3 only