There are 0 pins on this high power RF circuit board.The Evaluation board type is Mixer.Try searching with HMC1041 to find RF Board variants.The mount is attached to PCB.
EVAL01-HMC1041LC4 Features
0 pins Mixer Type
EVAL01-HMC1041LC4 Applications
There are a lot of Analog Devices Inc. EVAL01-HMC1041LC4 RF Boards applications.