KAmodPCAL6408 is an 8-bit I/O expander with I2C control, providing 8 programmable GPIO lines. The module supports address selection (0x20 or 0x21), enabling two devices on the same bus, and is equipped with both Pmod and KAMAMI standard connectors for easy integration with development kits, while the Pmod pass-through connector allows daisy-chaining of modules.