I have had this piece of junk for not 2 hours now and I have already demanded for my money back. (I bought it directly from the Manufacturer) I'm using this device with an AppleDesign Keyboard and Apple ADB Mouse II. They work, but upon waking from sleep the mouse speed is turned up WAY to high. Just a little movement will make the mouse fly across the screen. In order to fix the ridiculous problem, I have to unplug and re-plug the device. I'm using an iMac G3 450 and sometimes when I try to put the computer to sleep, I get a message that darkens the screen and in 10 different languages, tells me to restart. And they claim that the Power Key on the ADB keyboards will work...they don't! I can press it millions of times, but the computer will not turn on.Buying this product was a mistake and I have no intention of keeping it.