Eathtek Replacement CPU Fan for Dell Studio XPS 1640 1645 1647 M1640 series, Compatible with part# 0W520D W520D GB0508PGV1-A B3679.13.V1 DQ5D577D006 Compatible Model Numbers: Dell Studio XPS 1640 1645 1647 M1640 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.