Very decent keyboard for a small price, the already described phenomenon by calling the system setting is completely unproblematic in practice, bear in mind, you are expected but: The keyboard requires its own software and which prevents at boot all keyboard shortcuts, I suspect, because the driver only is later loaded in the boot process. Result: Start in Safe / Single user / Target Disk mode by pressing a key command is not possible, and a real problem arises when you have started for maintenance / diagnostics, for example, TechTool from CD and can not mechanically before restarting. Eject, about the Mac mini. Then the computer will start only from the CD, there is not available the driver you need and thus the keyboard, and keyboard without changing the boot drive, how will that work? Without alternative replacement keyboard, which only requires the native resources, you can not do so quickly from the number out.