Webopedia Staff
Last Updated May 24, 2021 8:00 am
Short for zero-slot LAN, a local-area network (LAN) that uses existing serial and/or parallel communication ports on the computers in the network instead of requiring network interface cards (NICs) that would occupy an expansion slot. Zero-slot LANs are typically slower than LANS that use NICs and are limited to two or three network nodes.