This is the CPU Cooling Fan for the Dell Latitude 15 5520 and Precision 3560 series laptop with U-type CPU processor, and with the integrated Graphics. If your PC fan is running very loud or not functioning then a replacement may be needed. The fan uses an integrated flex cable to connect to the mainboard. The cable connects via 4-pin connector making it a plug and play replacement module, NO soldering is required, attaches to your existing heatsink. Model Number|DXJNVProduct Name|Dell DXJNV System Cooling Fan / HeatsinkProduct Type|Cooling FanColor|BlackConnection|4-pin, 4-wire plug-inWire Length| 4.30 cm / 1.70 inDirect Current|DC 5V / 0.38A or 0.5A, 5.1 - 6.2 CFMRevision|A01Compatibility|Dell Latitude 5520 And Precision 3650 Laptop Models