Adesso PS/2 to USB Adapter, connects 2 PS/2 connectors to 1 USB port/hub  (ADP-PU21 )
The Adesso ADP-PU21 USB to PS/2 adapter is the best solution for those who want to use legacy PS/2 devices on new USB systems. It allows you to connect a PS/2 mouse and keyboard through the USB port on any computer. Perfect for Notebook Laptop users.