There are 0 pins on this high power RF circuit board.The Evaluation board type is Mixer.Try searching with HMC560 to find RF Board variants.The mount is attached to PCB.
105976-HMC560LM3 Features
0 pins Mixer Type
105976-HMC560LM3 Applications
There are a lot of Analog Devices Inc. 105976-HMC560LM3 RF Boards applications.