StarTech.com USB to PS/2 Adapter for Keyboard and Mouse - Keyboard / mouse adapter - USB - USBPS2PC : Amazon.ca: Video Games
PS2 to USB Female,PS/2 Male Converter Changer Adapter for Keyboard Mouse 2pcs by Oxusbor(Notice:Can't Match All Motherboard,Have Matching Problem) : Amazon.ca: Electronics
Refurbished PS2 Keyboard Mouse Combo
USB To PS/2 Mouse Keyboard Adapter Cable
USB vs. PS2 ports: The battle between the old and the new. Which is better?
What is PS/2?
PS/2 to USB Adapter Converter for PS2 Keyboard Mouse - Walmart.com