Per Lenovo ThinkPad E14 E15 con scheda madre I7-10510U RX 640 NM-C421 5B20S72233
For Lenovo ThinkPad E14 E15 with I7-10510U CPU Radeon RX 640 Motherboard FE4AO/FE5AO NM-C421 FRU: 5B20S72233 Tested Good. •only one motherboard. Carefully install by yourself or ask a engineer for help.