Sony PCG-XG28 Primary User Manual page 61

The preinstalled Smart Connect software allows you to use an i.LINK
cable (optional) to connect your VAIO notebook to another VAIO
computer that also has Smart Connect. You can then use one computer to
copy, and edit files on the other computer. You can also print from a
printer attached to either computer.
i.LINK cables compatible with your VAIO notebook include cables with
the following part numbers: VMC-IL4415 (a 1.5 meter cable with a 4-pin
connector at each end), VMC-IL4615 (a 1.5 meter cable with a 4-pin
connector at one end and a 6-pin connector at the other end), and VMC-
IL4408A (a 0.8 meter cable with a 4-pin connector at each end). You can
purchase these cables from your local retailer, through the Sony VAIO®
Direct Web site (http://www.sonydirect.com/notebookaccessories), or
by calling 1-877-244-9995 (toll free).