# Port Speed Port speed settings affect how a LAN or WAN port negotiates the speed setting. Negotiation can be turned off (speed setting: **only**) or use [Autonegotiation](/glossary/a/auto_negotiation) (speed setting **max**) to determine actual speed. Communication on a port can be either half or full [duplex](/glossary/d/duplex). A port that is set to **disabled** does not handle any traffic.