786430-501 HP System Board (Motherboard) Dsc 840m 2GB i7-4510u Std M7-k111dx (Refurbished)
751510 501 751510 001 751510 601 840M/2GB i5 4200U DA0U82MB6D0 for HP Pavilion 14 N Series NoteBook PC Laptop Motherboard Tested|Laptop Motherboard| - AliExpress
MOTHERBOARD DSC 840M 2GB i7-4510U PRO - Mac Palace | Mac Parts Store