Part
5B21B64239
is utilised in the following Models:
81M900B9AU
300e 2nd Gen Notebook (Lenovo) (Type 81M9) - Type 81M9- 81M900B9AU (81M9-00B9AU)
81M9S03M00
300e 2nd Gen Notebook (Lenovo) (Type 81M9) - Type 81M9 - 81M9S03M00 (81M9-S03M00)