The Samsung DC97-21429H is a replacement cover PCB assembly made for Samsung washer and dryer combos. It prevents possible harm from dust, moisture, and other external factors to the appliance's fragile electronic components. To put it simply, it serves as a barrier that keeps your washer and dryer working longer and maybe averting the need for expensive future repairs.Important to note: Samsung advises hiring an experienced service technician to perform the installation even if changing the cover PCB assembly can seem considered a simple procedure. This is especially true if the manual for your washer dryer lacks installation instructions related to this product.