AbleNet 12000024 Large Print Keyboard - CCT VisionBoard2 Large Keys and Large Print Letters Keyboard - Wired USB Plug - Black Letters on Yellow Keys VisionBoard 2 is a USB keyboard that provides 1-in/2.5-cm yellow keys and bold, contrasting black print. VisionBoard is compatible with Windows 98SE and newer, and MAC OS 10.1.5 and newer. Users with low vision or functional limitations can increase and improve capabilities with greater comfort and control.