Devantech

Adapter for communicating to I2C, SPI and serial buses from a USB port. Output pins may alternatively be configured as general purpose digital input/output and analog inputs.

Devantech self-powered USB to RS485 adapter with support for baud rates up to 250kbps, automatic bus turn-around, and buses up to 128 devices.

Acroname MTM-IO-Serial module features adjustable rail GPIO ports, high current drivers, software controlled USB 2.0 hub and serial UART ports, all controlled by BrainStem technology.