Features: 100% brand new and high qualityIt protects your valuable data by keeping your CPU coolThe CPU fan features efficient heat dissipation and low noiseYou can work as long as you like without overheating your computerKeep your computer cool and comfortable on your lap or at your desk with this CPU fanMade of high-quality material, it is durable in use,perfect design for high compatibility and excellent compose Package Includes: 1 PC x Cooling Fan Specifications: Material: MetalColor: SilverPower Supply: DC 5V 2.5WPower Connector: 4PinsCompatible models for: Acer Aspire Aspire E5-731 E5-771g ZYWPart Number for: EF75070S1-C160-S99 DC 5V 2.5WCondition: Stock,with tiny scratches,tested working wellSize: Standard Size (It can be applied if the hole positions are the same as shown in the picture)Quantity: 1 PieceType: for Laptop CPU Radiator note: Here are two different fans/heatsink fit for those laptops model,pleaes compare this fan / heatsink with yours before buying.How to maintain CPU fan1.Do not put a computer in dusty places2.regular cleaning of dust and lubricants, every six months or every year, it is recommended to bring anti-static gloves