The CH376 chip implements FAT32 in hardware, which means no filesystem driver is needed on the CPC side. It also implements the lower level aspects of USB, making it relatively easy to write drivers for other USB devices (mouse, joystick, ...).
The Albireo USB port can drive any USB peripheral, including any standard USB mouse. It is no more needed to dig out a PS/2 compatible mouse for your [[Symbiface II]], or even worse, an Atari/Amiga one for the [[MultiPlay]].
=== What's in it? ===