HP 753976-001 - Power button board - For use on tablets without the Windows 8 operating system Retail
HP 747137-601 - System board (motherboard) - HM76 chipset, with UMA graphics memory - For use in models with Windows 8 Professional Retail
HP 724350-601 - Power button board - Includes cable - For use on models equipped with Windows 8 Professional Retail
HP 747136-601 - System board (motherboard) - HM86 chipset, with UMA graphics memory - For use in models with Windows 8 Professional Retail