This is the CPU Cooling Fan for Dell Latitude 7400 P100G laptop series, NOT compatible with the 2-in-1 version. 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 motherboard. The cable connects via 4-pin connector making it a plug and play replacement module, NO soldering is required, attaches to your existing heatsink. Compatible D P/N: HCYN0, 0HCYN0; YKF1F, 0YKF1F Compatible Part Number(s): EG50040S1-CF10-S9A, DC28000NFSL, NS65C12-18G24, DC28000NFDL Direct Current: DC 5V / 0.37A, 2.8 CFM Wire Length approx: 1.40 cm/0.50-inches Power Connection: 4-pin 4-wires, Plug-in Reference list of compatible with models: - Latitude 14 7400 What's in the box: 1x CPU Cooling Fan 1x Thermal Greases