The Out Darwind - The White Knight

My brother

I am going to the store to buy some rf cable assemblies for my brother. He is really into all kinds of tech stuff and always has a project of some sort to build something for his computer, TV or something else he can find in the house he want's to make better. But the thing he wants me to buy I have never heard of. Therefore he gave me a note with the exact name and even printed a picture of this thing he wants. He just told me to show the picture to the staff and they should know what to give me. He is too busy to even go to the store himself. But I want to help if a can in some way. Don't really know what he's working on right now though.