OEM Cooling Fan for the ENVY x360 15-EW 15-EY TPN-C157 TPN-C158 series laptop, this is the cooling fan for CPU processor and GPU Graphics card, attaches to your existing heatsink. 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. Service P/N: N09634-001, N09635-001 CPU Compatible Part Number(s): EG50040S1-CT00-S9A, DC280011US0 GPU Compatible Part Number(s): EG50060S1-C610-S9A, DC280011TS0 Direct Current: DC 5V / 0.5A, 2.5W Power Connection: 4-pin 4-Wires, Wire-to-Board NOTE: The Screw NOt included, Please retain the original screw for the installation of this part. Reference list of compatible with TPN-C157 TPN-C158: - ENVY x360 15-EW series: 15-EW1047NR, 15-EW1073CL, 15-EW0023DX, 15-EW0013DX, 15-EW1057NR, 15-EW1199NR, 15-EW1082WM, 15-EW1002NR ... - ENVY x360 15T-EW series: 15T-EW100 - ENVY x360 15-EY series: 15-EY1157NR, 15-EY0013DX, 15-EY1077WM, 15-EY1045CL, 15-EY0023DX, 15-EY0797NR, 15-EY0023DX, 15-EY0008CA ... - ENVY x360 15Z-EY series: 15Z-EY000