Replacement CPU Cooling Fan for Ultrabook NP530 / NP530U / NP530U4B / NP530U4C — KDB0505HA-CE21 / BA31-00125C (A01US)

Replacement CPU cooling fan engineered for Ultrabook models NP530, NP530U, NP530U4B and NP530U4C. This unit matches part numbers KDB0505HA-CE21 and BA31-00125C and is intended for A01US configurations. Designed as a direct swap for the original fan, it preserves the factory fit and connector layout to restore proper thermal management for your Ultrabook.