512GB - Built with the latest PCIe 4X4 controller; 2280 M.2 PCIe Gen4 x 4, NVMe 1.3 Built in end-to-end data path protection, SmartECC technology, and Thermal throttling technology High efficiency Graphene heatshield and compact design for any main stream PC or Laptop SEQ Performance Read up to 5,000MB/s, Write up to 3,300MB/s; 4K Aligned Random Write: up to 450K IOPs 3 Year Warranty; O/S Supported: Windows 7*/8.0*/8.1/10/11; Linux