The Rockwell module you mentioned, the 1783-EMS08T, is part of the ArmorStratix series of industrial Ethernet switches manufactured by Rockwell Automation.
The Allen Bradley 1769-PA2 module is a power supply module designed for use with the Allen Bradley CompactLogix family of programmable logic controllers (PLCs).
The Rockwell module you mentioned, the 1783-EMS08T, is part of the ArmorStratix series of industrial Ethernet switches manufactured by Rockwell Automation.
The Allen Bradley 1769-PA2 module is a power supply module designed for use with the Allen Bradley CompactLogix family of programmable logic controllers (PLCs).