multiport serial card

multiport serial card

A circuit board that contains multiple serial ports for connection to modems and other serial devices. The serial port is used as an interface by many different kinds of sensors and data collection terminals in a variety of industrial and medical applications. See device networking.


Multiport Cards for the PC
Comtrol developed the first multiport serial card for the PC. Such cards turn a PC into a remote access server for modem and ISDN communications or a collector of signals from sensors and other data acquisition devices. The card at the top left uses RJ-45 jacks to connect to serial lines. The other two provide DB-25 connections for up to eight modems. (Image courtesy of Comtrol Corporation.)
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Comtrol's traditional multiport serial cards are given a prominent place and details of new products designed specifically for the broadcast industry will be available soon.
Perle's extensive range of multiport serial cards make it easy to add 4 to 512 serial ports to Linux, Unix and Windows servers.
For instance, Maxspeed Corporation has long offered a line of terminals, thin clients, and multiport serial cards for the multi-user market.
Multi-Tech's ISI multiport serial cards provide additional serial ports for remote access servers, multiuser hosts and PCs, featuring built-in speed and data handling efficiencies that keep pace with today's high-speed modems.