Check the listing for details. National Instruments NI USB-8452 I2C/SPI Interface Device. Condition: Used. Listed at 495.00 USD. National Instruments USB-8452 I2C/SPI interface device. Confirmed to initialize under NI MAX and believed to be fully functional. 3.3 MHz I2C, 50 MHz SPI I2C/SPI Interface Device - The NI USB‑8452 is a master interface for connecting to and communicating with inter-integrated circuit (I2C) and serial peripheral interface (SPI) devices. With plug‑and‑play USB connectivity, the USB‑8452 is a bus-powered, portable solution to communicate with consumer electronics and integrated circuits. It also includes eight general-purpose digital I/O lines for a variety of applications, such as configuring the address of I2C devices, toggling LEDs, or strobing convert and data ready lines common to analog converter chips. For additional information and resources, use the model name to search the manufacturer's website.