USB to PS2 Adapter,PS2 Keyboard and Mouse to USB Converter Cables, for Keyboard and Mouse, Plug-and-Play,No driver required: Amazon.co.uk: Computers & Accessories
USB-to-PS/2 Adapter
Logitech USB Optical Mouse 930582-0403 PS/2 PC MAC | eBay
390632-001-RFB, HP Optical USB/PS2, 2 button mouse | EET
Trust.com - PS/2 Optical Mouse
A Converter You Won't Have: PS/2 Mouse To Serial Mouse | Hackaday
Microsoft X08-79294 5V USB PS/2 Compatible Wireless Optical Mouse Blue – Second Wind Surplus
Microsoft Optical Mouse Blue USB and PS/2 Compatible ** | eBay
A Converter You Won't Have: PS/2 Mouse To Serial Mouse | Hackaday
Microsoft Wheel Mouse Optical Drivers Download for Windows 7, 8.1, 10
Cit M14 Optical Mouse Black USB/PS2 - Wired
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Microsoft Basic Optical Mouse - PS/2 and USB (White) P58-00001
Cherry Mouse Cable Black USB/PS2
PERIMICE-209 P - Wired PS/2 Mouse with Scroll Wheel and 1000 DPI – Perixx USA