Item is used and sold as-is.  Comes with the stick and the power adaptor.  You can download the software from the Logitech website.  Last time I tested it, it worked fine.

• Durable optical technology provides smooth precision and resists dirt, eliminating the need for cleaning
• Large finger-operated trackball is easy to use, offers superior control and reduces hand and wrist movement
• Sleek shape is flexible enough to use in either hand