When you try to put a 17" laptop on it, it takes up almost the entire width of the tray and leave very little room for an external mouse. Even with a regular keyboard, you have to sag the keyboard a bit to use all the space for the mouse. It works great for casual use, which I give, but actually I would prefer a wider solution. Feels like the tablet is "slipping off" when actually using it on my lap.
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