Apart from the cable to connect the two together you will need to install the device driver that matches the operating system (W8) with the device (Lexmark x 4650)
A Device Driver is the piece of software in the machine that "talks" to a peripheral device.
Take care where you get it from - Lexmark / Microsoft will not charge - but there are places who will try to sell it to you - give them a miss.
Good luck...
http://support.lexmark.com/index?page=productSelection&userlocale=EN_UK&locale=en
Peccavi
January 2013