A printed circuit board that provides a transmitting/receiving port for a particular wide area network (WAN) or local area network (LAN) protocol. Line cards plug into telephone company switches and high-end routers. A line card implies that the unit has a modular chassis that can be expanded by adding more cards and/or that it supports multiple network protocols. Small and medium-size routers have a fixed number of ports, typically Ethernet, and the line card circuitry is built into each port.
In a user's desktop or laptop computer, the counterpart of the line card is the network adapter (see network adapter).
In a user's desktop or laptop computer, the counterpart of the line card is the network adapter (see network adapter).
 | Reproduced with permission from Computer Desktop Encyclopedia. Copyright (c) 1981-2008 The Computer Language Company Inc. All rights reserved. |
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