HP 855656-601 motherboard is a system board listed for the HP ProBook 440 G3. Its catalogue description specifies an i5-6200U processor and UMA graphics, identifying the main configuration of this board.
The variant is also marked fDDR4 and WIN in the parts listing. These identifiers distinguish it from nearby ProBook system-board part numbers with other processors or configurations. It is intended as the notebook’s system board, bringing its specified processor and graphics configuration together in one part.