Click to expand.The ports are USB 2.0. BUT as the keyboard is not powered, there are already two devices being powered from the computer's 1 USB 2.0 port, namely the keyboard itself and the mouse (if you attach your mouse to one of the ports on the keyboard.) A few user have reported on here that with this setup they cannot charge or sync there ipods, flash drives, etc, through the remaining USB port on the keyboard. I would suggest thinking about your setup before spending your money on the keyboard for the reason of having that extra USB 2.0 port.

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One way this would all work is if you use a bluetooth mighty mouse, then the keyboard can power itself and at least one other powered device. Mac os sierra transformation pack for windows 7. I have a bluetooth mighty mouse and a bluetooth keyboard but i hate this keyboard.and i went to the apple store and tried the new keyboard and it was easily the best thing i have ever typed on in my life.i couldn't stop typing!!!! So to sum up.if i have the apple keyboard and a wirelessly mighty mouse (therefore having 2 free usb ports on the keyboard) i can fully charge an iPod in it but as soon as i plug something else into the other one it wont work, yes???? I would buy the wireless one but i don't like it how it is not a full keyboard, i find it ridiculous apple didnt give the option for a full one and a compact one.what are the odds of apple releasing a full one???

The low power messages are a result of USB only carrying 100mA of current through each connection, so whether your extra devices require the full 100mA of current to operate or not depends on the device you are plugging in. The same will be for ANY USB keyboard, PC or MAC unless they are powered by additional external source and the keyboard has a USB HUB built in (highly unlikely) A charging device would more than likely require the full 100mA of current to charge the item in question, so it is no wonder you'll need a bus to itself for those types.

Similar to other devices that need the full 100mA of current (external hard disks etc). Somthing like a USB pen drive would only need a fraction of that power so they will work fine. Apple could have put a propriatory keyboard connector on the back of the iMac to incorporate a full USB hub internally to the keyboard, but this would have increased the cost of both the iMac and the keyboard. In short, if you have USB devices that need the full 100mA of current, connect them directly to the back of the iMac, or buy a powered USB hub which (when using an external power source) will provide 4 USB2 ports, each with 100mA, such as this. The USB hub integrated in the keyboard is 2.0 at least it shows up as 2.0 in system profiler. There is something rather inconvenient about them though.the ports are placed too far in for my taste. If you try to put in a receiver for a mouse for instance that is really annoying.apple has put in an extension cord also but that's just ugly to have plugged in and all over your desk.