This is a Brand New OEM Carrier/Bryant/Payne furnace Draft Inducer Control Circuit Board. The Carrier/Bryant/Payne part # is 313680-751 (also HH84AA019B & CEAS310102-01). Thanks for looking and good luck!
The control board is the "brain" of your unit, coordinating and executing the operation of other various components by sending voltage when and where needed. A control board is constantly monitoring sensors and safety switches in the unit.