Sony PCG-R505ES - Manual (Page 69)

Connecting a USB Device
69
You can use an optional Sony USB mouse, such as a PCGA-UMS1 series, with
this computer. Since the USB mouse software driver is preinstalled in the
computer, you simply plug the USB mouse into the USB port to use it. One USB
port supports one USB device.
Connecting USB Device to the Docking Station
✍
See the manual that came with your USB device for more information on its
installation and use.
To USB
USB mouse