Unstable 2 2

I had bought a similar table (Lavolta brand) a few months ago, which I was very satisfied. So I bought it in order to offer it because at the time of purchase, the price of the first had flown.
I am much less satisfied: on the first there was a kind of catch that enabled stalling the computer which is not the case here, only the round edge is supposed to remember. In fact, the computer slides. For the same price range, the other table has a built-in fan (which is not necessary but can be useful if the computer tends to heat, or in case of hot weather).
So bad buy ...