HP 918313-001 motherboard (system board) is a replacement board for HP EliteBook 840 G3 configurations with WWAN. It is identified by OEM reference 647769 and combines the main system board with its specified processor.
The board includes an Intel Core i5-6300U dual-core processor running at 2.4 GHz, with 3 MB of Level-3 cache and a 15 W TDP. UMA graphics memory is specified, so the graphics memory is shared rather than listed as a separate dedicated graphics component.
This exact configuration is described for EliteBook 840 G3 models with WWAN. The processor, UMA graphics and WWAN-specific fit make it a system-board option for restoring or servicing that laptop configuration.