SEGA developers revealed they developed a "fully playable" Shenmue 2 PS2 port but it never saw the light of day.

you’d have found when you bought a mouse with a PS/2 connector fitted, it may well have come with an adapter for a 9-pin RS232 serial port. Those mice from a decade or more ago would have ...

A full Shenmue PS2 port was created by SEGA in the early 2000s, but rights issues held the game back from release.

In the 1980s, most mice used a serial connection; however, a bus mouse was occasionally used to free up a serial port for another peripheral. The bus mouse connector looked like a PS/2 connector ...

A recent interview reveals that the original Shenmue was ported to both the PS2 and Xbox but the ports were never released.