Lenovo systemboard 5B21A41219 is a replacement motherboard listed for the ThinkPad T590. It is intended for restoring or replacing the notebook’s systemboard, with the processor identified in the product name as an Intel Core i7-8665U.
The listing specifies a Japanese keyboard layout, a distinguishing detail of this board variant. The stated compatible notebook is the Lenovo ThinkPad T590, so the board is tied to that model in the product information.
Package contents: systemboard.