Per Lenovo ThinkPad E14 E15 con scheda madre I7-10510U RX 640 5B20S72233 NM-C421
Motherboard part number: FE4AO/FE5AO NM-C421 FRU: 5B20S72233. Compatible Laptop model :For Lenovo ThinkPad E14 E15 Laptop Series. •only one motherboard. Carefully install by yourself or ask a engineer for help.