HP 753976-301 - Power button board - Includes connector cable - For use on models with WIN10 IoT Retail
HP 824501-401 - System board (motherboard) - Includes an Intel Atom z3795 quad-core processor (1.60GHz, 2.0MB Level-2 cache), 4MB system memory, 64GB eMMC storage, and replacement thermal material - Win10 or Windows Embedded Industry 8.1 64-bit Retai Retail