There are 0 pins on this high power RF circuit board.The Evaluation board type is Switch, SPDT.Try searching with HMC349 to find RF Board variants.The mount is attached to PCB.
EV1HMC349ALP4C Features
0 pins Switch, SPDT Type
EV1HMC349ALP4C Applications
There are a lot of Analog Devices Inc. EV1HMC349ALP4C RF Boards applications.