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This replacement CPU cooling fan is custom-made for Sony Vaio VGN-JS, VGC-JS, VGC-LV50DB, VPCL11M1E, VPCL21AFX and VPCL218FJ laptop series. Built with 5V 3 Wires 4PIN connector, it is an exact OEM substitute for part number UDQF2PH54DF0. It delivers steady airflow to rapidly discharge internal heat, fixing issues like fan noise, overheating lag and unexpected shutdowns. Precise reserved mounting holes support plug-and-play installation without modification, ideal for daily laptop repair and cooling fan replacement.