The IC660ELB921 is a Single Slot PCIM Card designed for integration with the Genius LAN interface, specifically manufactured by GE Fanuc. Serving as an essential entry point into the Genius I/O System, it is compatible with the IBM PC/AT/XT family. This card supports a total of 8,000 input and 8,000 output locations and operates with a required logic power of 5V DC. When configured for input-only operation, the IC660ELB921 can read Genius block information, while an output-only configuration allows for writing to Genius block outputs. Unlike its counterpart, the IC660ELB922, the IC660ELB921 is equipped with a single daughterboard, enabling efficient control of devices on the Genius serial bus. The initialization process for this card manages tasks and controls errors across a minimum of 30 bus devices. As an AT-type board, the IC660ELB921 facilitates easier integration into user-developed microprocessor systems while ensuring full compatibility with all Genius protocols, including mechanical, electrical, and communication timings. The daughterboard included with the IC660ELB921 allows for a cost-effective connection to any Genius FE I/O bus, thus enabling the host system to manage I/O effectively while leveraging the advantages of broad diagnostics, high consistency, and robust noise protection inherent to the Genius I/O System. Configuration of the daughterboard can be accomplished independently through the provided configuration software.