deskthority

I know what's the keyboard on the bottom and I'm already buying the both keyboard but I was desapointed to not find any info on this keyboard I will probably publish some picture when I get my hands on

Hi,
I've found this keyboard but it's impossible to have more detail (since googling first keyboard won't return something relevant).As you can see it has that little yellow keycap on the upper right. Does anyone know something about it ?
Thank you for your help :D

Here is the picture
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