Lenovo SYSTEM BOARDS
5B21C15349
is compatible in the following Models:
Lenovo ThinkPad X Series laptops
ThinkPad X390 Yoga Laptop - 20NNCTO1WW
ThinkPad X390 Yoga Laptop - 20NQ535H00
ThinkPad X390 Yoga Laptop - 20NQS0U000
ThinkPad X390 Yoga Laptop - 20NQS25C00
ThinkPad X390 Yoga Laptop - 20NQS2W400
ThinkPad X390 Yoga Laptop - 20NQS4MH00