Lenovo SYSTEM BOARDS 5B21K85599 is compatible in the following Models:

Lenovo ThinkPad L Series laptops

ThinkPad L13 Gen 2 (20VH, 20VJ) Laptops - 20VJS04N00
ThinkPad L13 Yoga Gen 2 (20VL, 20VK) Laptops - 20VLS1YE00
ThinkPad L13 Yoga Gen 2 (20VL, 20VK) Laptops - 20VLSOHT
ThinkPad L13 Yoga Gen 2 (20VL, 20VK) Laptops - 20VLSONKOO