Lenovo SYSTEM BOARDS 5B21C74706 is compatible in the following Models:

Lenovo 300 Series (IdeaPad)

300e Chromebook 2nd Gen (Lenovo) - 81MB001DUS

300e Chromebook 2nd Gen (Lenovo) - 81MB001FSP

300e Chromebook 2nd Gen (Lenovo) - 81MB0034JP

Lenovo Chromebooks Series

300e Chromebook 2nd Gen (Lenovo) - 81MB001CAU