Allen-Bradley 634487A Memory Interface Module is an AB‑made I/F board designed for the 7300 CNC control family, acting as the memory interface between the controller and memory resources. In catalog references, this module is listed as 634487 and is associated with the 7300‑UPH‑1 designation, with SP‑634487 as a cross‑reference, indicating interchangeability within the AB 7300 memory/interface family. Distributor listings frequently note it as used or refurbished within the 7300 memory interface lineup, underscoring its status as legacy hardware for CNC applications.
