When used with one or more optional Remote Asynchronous Nodes (RANs), the 128-Port Asynchronous PCI Adapter supports attachment of a maximum of 128 EIA-232 or RS-422 asynchronous serial devices such as terminals, modems, and printers to a system unit.PRODUCT FEATURES:Connects to the remote async node using (4 or 8 wire) direct cabling or via synettronous modems;Attaches up to eight remote async nodes;Includes two 15-pin female high-density D-shell connectors;Has 1MB memory;Includes controller line terminators (required for operation);Includes async wrap plug (supplied for diagnostics).