A-2DuraLAN Fast Ethernet NICs User’s GuideConnection TypesHere are some of the possible connection type options given whenconfiguring NICs. The options vary depending upon whichoperating system the NIC is being configured. Autodetect Default ConnectionDetects the cable type, optimal line speed, and duplexity for thespecific Adaptec PCI NIC model in use. This is the default andrecommended connection type. 10 Megabits/sec UTP/Half DuplexForces the connection to 10 Megabits/sec in Half Duplex Mode. 100 Megabits/sec TX/Half DuplexForces the connection to 100 Megabits/sec in Half Duplex Mode. 10 Megabits/sec UTP/Full DuplexForces the connection to 10 Megabits/sec in Full Duplex Mode. 100 Megabits/sec TX/Full DuplexForces the connection to 100 Megabits/sec in Full Duplex Mode.Full Duplex SupportTo implement Full Duplex on your network, you need both an NICand a switch that supports Full Duplex. Full Duplex supportallows an NIC to send and receive data at the same time, doublingavailable bandwidth.Note: Full Duplex can also be enabled point-to-point with acrossover cable instead of a switch.Installation instructions in this User’s Guide describe how to enableFull Duplex. Additional information can be found in the readme.txtfiles. Adaptec PCI TX NICs support Full Duplex at both10 Megabits/sec and 100 Megabits/sec.