Heatsink Fan for Lenovo ThinkPad T440/T450/T440S/T450S — AT0SB004PU0 / 04X3907 / M-244C-2

Replacement heatsink assembly with cooling fan compatible with Lenovo ThinkPad T440, T450, T440S and T450S. Includes part numbers AT0SB004PU0, 04X3907 and M-244C-2 for direct-fit replacement. Ideal for restoring proper thermal performance and reducing fan noise caused by a failing original unit. Please confirm connector type and mounting alignment with your laptop model prior to installation.