In my case it is a wireless keyboard / mouse set from Logitech - The works so far properly.
The adapter I bought to use my input devices by a KVM switch can, which offers only the conventional PS / 2 as an interface. Here the adapter not to work, but what specifically concerns the KVM switch with under.
The supplied adapter does not look like on the product image, but is less angular and plain, black. The processing can be described as good to high quality - because nothing wobbles.
In one sentence: Who knows what this adapter is good, can buy it without hesitation.