Please check the compatible model and compare the sample pictures, make sure this is the correct Cooling Fans you need! Please contact us if you have any issue! *Parameter: DC 5V,0.5A *Package Include: 1* Fan, *Compatible Models: for Inspiron 15-5542 5543 5545 5547 5548 5557 3567 3576 5457 14-5442 5443 5445 5447 5448 3467 3476 5457 03RRG4 P39F P49G 15-3578 15MR- 1528S 14MD-1628S laptop DC 5V 0.5A Fan . *Applicable scenarios: Solve the error, abnormal noise, and high temperature of your laptop fan, so that your laptop fan can operate normally again! *Special attention: 1.Before replacing the laptop fan, remember to shut down the laptop, remove the plug of the external battery or internal battery of the laptop, and then press the switch button several times to release the static electricity and surplus electricity of the motherboard, so as to avoid damage to the motherboard caused by static electricity.In addition, please be sure to pay attention to the direction of the fan plug, do not plug the anti-fan plug, so as to avoid burning the fan. 2.Please pay attention to check whether the voltage of your laptop CPU&GPU fan is consistent with our fan voltage, because the same model of computer may have different voltage notebook cooling fans. 3.Disassembly is risky, and installation needs to be cautious.If you can’t install it yourself, it’s best to ask a professional to help install it. You can also find the installation tutorial on the Internet for reference .Note: Please check the compatible models before purchg and compare the sample fan pictures. If you have any questions about what kind of fan you need, please contact us. Worry-free customer service: If you have any questions, please feel free to contact us. We will get back to you in time to help you solve the problem. Please be sure to check the fan diagram and the fan code indicated in the picture!! Laptops with the same model number sometimes may have different types, Please carefully check the displayed picture and fan code to make sure it is the same as your laptop fan picture!!. Replacement a new laptop CPU & GPU cooling fan will allow you to use the laptop to run stably and comfortably, solve the problem of abnormal noise and aging of your laptop cooling fan, solve the problem that the laptop system prompts the fan to not run normally, solve the problem of poor heat dissipation and high temperature of your laptop fan, and can not use the laptop normally so that your laptop fan can operate normally again!. New laptop CPU & GPU cooling fan, fast cooling, low noise, let your computer run at a low temperature, stable temperature,create a noise-free & interference-free environment for you.If you want a quiet, stable, and comfortable office environment for your laptop, this is the perfect choice for you. Compatible models: LAOKOEN Replacement Fans for Dell Inspiron 15-5542 5543 5545 5547 5548 5557 3567 3576 5457 14-5442 5443 5445 5447 5448 3467 3476 5457 03RRG4 P39F P49G 15-3578 15MR-1528S 14MD-1628S laptop DC 5V 0.5A Fan.