HexWax Ltd.
HexWax Ltd., London, U.K., offers the expandIO-USB universal USB I/O expander that lets you control all I/O from the PC, including 10-bit A/D, I2C, and SPI interfaces. Because it uses the HID USB device class, no device drivers are necessary for Windows, Mac OS, and Linux. The device incorporates USB status indicators, including indication of when the computer is entering a hibernation state.