USB 2.0 Adapter - USB A Female to PS/2 Male - 5 Pack | Computer Cable Store
USBキーボードをPS/2ポートへ接続するアダプタ | CURRENT,INC.
Amazon.com: 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) : Electronics
USB to PS2 Converter Cable Connect for Keyboard Mouse - GenNext Computer