IBM 11H5969 8 x Ports Asynchronous ISA Adapter (3-8) for rs6000

Product Description

The IBM 11H5969 is a specialized adapter card designed to expand the connectivity options of IBM RS/6000 computer systems. It features eight asynchronous serial ports, allowing for the connection of multiple serial devices such as modems, printers, terminals, or other communication equipment. The adapter utilizes the ISA (Industry Standard Architecture) bus, which was a common expansion bus in older computer systems, including many models within the RS/6000 family. Each of the eight ports provides asynchronous serial communication, meaning data is transmitted one bit at a time, with start and stop bits to frame each character. This type of communication is standard for many legacy peripherals and networking devices. The specific connector type for these ports is typically DB25, though variations might exist depending on the exact implementation or cabling used. This adapter is crucial for systems that require extensive serial connectivity, enabling users to interface with a variety of hardware. Its integration into the RS/6000 platform highlights its role in providing robust I/O capabilities for workstations and servers of that era, facilitating tasks ranging from data acquisition to terminal access.