this section describes how to connect ports modules to the externalbus interface, to add up to 48 expansion ports, for a total of 64 serialports.
ports modules
the following are ports modules that can be added to portserver ii:
1.ports/16em, which provides 16 additional serial ports
2.ports/8em, which provides 8 additional serial ports
expansion portsillustration
procedure
follow this procedure to add expansion ports.
1. turn off the power to the portserver ii. if you attempt to connectexpansion modules to the base unit while the power is on, severeelectrical problems and damage to portserver ii and the expansionmodules can occur.
2. connect the cable that came with expansion module to the ebi outport on the base unit and the ebi in port on the expansion module.
3. if you are adding more than one expansion module, continue thiscabling procedure from expansion module-to-expansion module,linking ebi out ports to ebi in ports. be sure that you do not connectebi out ports together or ebi in ports together.