Key Features
The 3Com 3C509B-COMBO is an EtherLink III ISA Network Interface Card offering 10 Mbps Ethernet connectivity. Its 'Combo' designation means it includes connections for Twisted Pair (10BASE-T via RJ-45), Thin Coaxial (10BASE-2 via BNC), and Thick Coaxial (10BASE-5 via AUI connector). It features 3Com's Parallel Tasking technology for performance enhancement on legacy ISA bus systems.