The New SanDisk Optimus GX PRO 8100 1TB NVMe Gen5 SSD SDSP82100TAN is a high-performance internal SSD designed for computers and laptops. With a form factor of M.2 2280 S3-M, this SSD offers impressive read and write speeds of 14,900 MB/s and 11,000 MB/s respectively. This is a SSD I purchased but cannot use because can only handle one Gen5 SSD. I consider this an open box but was never taken out of the plastic case. Comes in a bulk box. Thanks for looking.