For the ZX Spectrum is available K-Mouse Turbo, an improved version of the Kempston mouse. The interface features
- standard PC mouse with USB or PS/2 connectors
- mouse-wheel and up to 4-buttons support
- additional connector for Amiga mouse and Kempston joystick
- reset button
- special Master/Slave mode setting for 2 interfaces connected together
- internal version for the cpu slot
For the manual and software support look at the website of Velesoft.