Atari ST USB PC Mouse Adapter
Compatible with Mice that support Legacy PS2 Protocol, currently available compatible optical mice are listed below:
Microsoft Basic Optical Mouse, Microsoft Wheel Mouse Optical USB, Microsoft Ready Mouse, Microsoft Optical Mouse for Business, Logitech RX250,
Genius Netscroll, and Genius X Scroll.
Atari ST PS2 Mouse Adapters
This PS2 adapter is compatible with modern low cost PS2 Optical Mice including Genius Netscroll 100 and Genius Netscroll 120, Genius X Scroll
Genius XScroll Mice are available in the UK from CCL for less than £4 + Postage link below
CCL Genius Mouse Link