Applicability: Cooling fan designed for Lenovo Legion Y540 15IRH 81SX Y7000 2019 81NS (GTX1660Ti) series. Material: Made of aluminum alloy and ABS material, sturdy and durable, not easy to damage and long life Perfect replacement for your laptop's damaged parts. Strong Heat Dissipation: With 4 pin power connector to enhance heat dissipation and reduce temperature during continuous operation. Portable: Small in size and light in weight, this cooling fan can help reduce the burden of your laptop and improve its efficiency. Easy To Connect: This laptop cooling fan is easy to connect, easy to operate, easy to use, easy to install and remove.