This Seagate FireCuda 530R ZP4000GM30063 4TB M. 2 2280 PCIe 4.0 x4 NVMe SSD is an excellent choice for internal storage needs. With a write speed of 4x, this solid state drive offers ample storage capacity of 4TB, making it perfect for storing large files and data. The drive interface is M. This Seagate FireCuda 530 is a reliable and durable model that offers exceptional performance. It is an ideal choice for computers, tablets, and other electronic devices that require a high-speed storage solution. This SSD is perfect for gamers, video editors, and other professionals who require a fast and reliable storage option. This is the model that does NOT include a pre-installed heatsink.