Logitech here, as usual, a product of very good quality, well finished and perfectly serving its purpose: work comfortably with a laptop on his lap. This device is however not "portable" as it supports PC, for against, when properly installed in an armchair or sofa, we can finally work in good conditions. The tablet, generously padded, is very comfortable, the fan is extremely quiet (I did however not measure its impact on the autonomy of the pc batteries). Also note the very good quality built-in speakers. We are not talking hi-fi for sure, but Logitech offers there, excellent sound quality for use of this type.
In short, no surprise, a tool that perfectly fulfills its function and which will be particularly useful to those who have to work on a laptop while maintaining comfort. Be warned however, this tablet remains still for a sedentary use (because a little emcombrante to carry).