USB device to I²C master adapter. It is based on CP2112 integrated USB brigde with native Linux kernel support. Therefore device create kernel accesible I2C interface intstantly on almost any Linux distributions.
The USB device behaves as a standard HID device, so you do not need non-standard drivers. It also allows control of devices in the I2C system bus.
In case of Linux the drivers are available in kernel. Therefore the module creates the system-wide I2C bus.
The functional examples are available in pymblab control library. The details are available on MLAB wiki