Chester Creek LessonBoard: * Operating System: IBM PC; Mac * Compatibility: Windows 98SE, 2000, ME, XP, Vista, MAC OS 10.1.5 and higher * Safety: FCC CE Approved * Environmental: RoHS Compliant * Connector: USB (PS/2 adapter included for older systems) * Size: Size: 18-inch x .75-inch x 6.75-inch * Mac compatible; no Mac keys