Has a pin for flat mounting which is nice. The base is wide and sits in my sofa cushions. I stretch my legs, so that's not a problem. Both me and my husband feel comfortable. I'm 5ft 6", 135lbs, hubs are 6ft 4" and about 230lbs. It's spacious enough that we can both use it without any problems. The fans are powered via USB. Each fan has its own retractable USB connector and one fan has a USB connector on the connector so you can connect one fan to another fan so you only need one USB connector. There is no on or off switch so I use a USB port with toggle switches so I can turn it on and off. The fans are in a strange place. So when I use the corner function they blow on the plastic and not the inlets. If I have something flat I can move it and everything is fine. The bottom corner is quite high. If the small retaining tabs were moved down one, that would be perfect. It's not very strong or stable, but it doesn't need to be. You probably need a mouse pad. I have two mice that don't like it very much.
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