StarTech.com USB to PS/2 Adapter - Keyboard and Mouse - Keyboard Adapter
Various lengths are available to extend your PS/2 mouse cord, or connect it to a KVM switch.
At a Glance
Separate PS/2 keyboard and mouse inputs
Single USB host connection to computer
No driver or software required
No external power source required
This PS/2 USB Adapter converts a single USB port into two universal PS/2 ports, letting you connect any PS/2 peripheral (e.g. mouse, keyboard) to a computer through USB. Supporting plug and play installation, the PS/2 USB adapter offers a cost-effective way to bridge legacy PS/2 peripherals with a more modern, USB-capable computer.