A Niagara R2 Enterprise Server's hardware was replaced. The new hardware does not include a parallel (25-pin) RS-232 printer port for the existing dot-matrix printer which is used for printing out alarms. It was connected with an adapter to a USB port instead. Alarms will not print out.
Does the server support USB-connected printers?
pc hardware replacement
Niagara R2 does not support USB-connected printers.
The dot-matrix printer needs a connection via a RS-232 serial port or a standard (25-pin) parallel port.