This product does exactly what it was designed to do. The company replies if you email with questions. However, I had a problem: my Apple keyboard doesn't have a scroll lock key to switch desktops with a key combination. I emailed customer support and they told me that you can also switch desktops by pressing CTRL twice and then either 1 or 2 to choose which desktop to switch to. Lo and behold, it worked great! I don't think using CTRL was in the manual, so I'm glad I know now.
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