The Keurig 2.0 K500 K400 K543 Main Board Circuit Motherboard is an OEM replacement part designed for Keurig coffee makers. This green circuit board is compatible with models such as K2.0 K400, K2.0 K500, K2.0-400, K500, K2.0-500, and K400. It is suitable for pod coffee machines and is a unit quantity of 1. this motherboard is an essential component for ensuring your Keurig coffee maker continues to function properly.