Azio Large Print 3 Color Backlit Keyboard (KB505U) User Manual | 4 pages | Also for: Vision Backlit Keyboard (KB506), USB Micro Bluetooth Adapter (V4.0 EDR + aptX) (BTD-V400), USB Micro Bluetooth Adapter (V4.0 EDR + aptX) (BTD-V401), Backlit Bluetooth Tablet Keyboard (KB335), Levetron Clicker Mechanical Keyboard (KB528U), Mini Thumb Keyboard w/ Trackball (KB178RT), Levetron Mech5 Gaming Keyboard (KB577U)