I searched, but couldn't find the answer for this... My desk configuration for my iMac includes a keyboard tray. I am contemplating just not using it, however it really does put the keyboard in a more natural place for me to sit correctly. If I want to use the wired keyboard though, I will obviously need some type of usb extension. I have read these came with the old keyboards, but they don't come with the new ones. Does anyone know where I can find one that is compatible with the aluminum keyboard?? Would the extenders that came with the old Mac keyboards work (in case i can find one on ebay or something)???