Sony PCG-Z505HSK - Manual (Page 57)

Connecting a Universal Serial Bus (USB) Device "%
✍
When you wish to use another USB device, such as a floppy disk drive, at the same time,
connect the second USB device to the (mini USB) connector by attaching the supplied
conversion adapter.
✍
See the manual that came with your USB device for more information on installation and use.
to
USB
Conversion adapter (supplied)