Lenovo SYSTEM BOARDS
5B21C21405
is compatible in the following Models:
Lenovo ThinkPad X Series laptops
ThinkPad X1 Carbon 7th Gen - (20QD, 20QE) Laptop - 20QDCTO1WW
ThinkPad X1 Carbon 7th Gen - (20QD, 20QE) Laptop - 20QDS5UY0Q
ThinkPad X1 Carbon 7th Gen - (20QD, 20QE) Laptop - 20QDSOEL00
ThinkPad X1 Carbon 7th Gen - (20QD, 20QE) Laptop - 20QEW5JU04
ThinkPad X1 Yoga - 20QFCTO1WW
ThinkPad X1 Yoga - 20QG52P70F
ThinkPad X1 Yoga - 20QGHINGE
ThinkPad X1 Yoga - 20QGS4PX00