Eathtek Replacement CPU Cooling Cooler Fan for HP Probook 4540S 4740S 4745S series, Compatible with part numbers 683484-001 DFS551205ML0T 040213A (Note: The part# may be different) Compatible Model Numbers: HP Probook 4540S 4740S 4745S Replacement and high quality,Replace your faulty, cracked or broken fan. Each fan is tested before shipping All pictures are taken from the real item, please check carefully before bidding. Notes: The fans are produced by Forcecon,ADDA,Sunon,Kipo or any other manufacturers,you may receive any depending on the stocks.