Genius G-PEN 450 . Connectivity technology: Wired, Working area: 101.2 x 138 mm, Resolution: 2000 lpi. Minimum processor: Pentium, Minimum RAM: 64 MB, Minimum hard disk space: 4 MB. Battery type: AAA. Minimum system requirements: USB CD/DVD-ROM, Compatible operating systems: Windows 2003/XP/Me/2000/98SE Mac OS 9.X, 10.2.6