Western Digital SN740 2TB NVME PCie Gen4 2230 form factor (Single-sided). Perfect Upgrade options with the following compatible devices. Any Dell/HP/Lenovo laptops that use 2230 PCIe NVMe drives (message us with your SSD model if you’re unsure). Surface Laptop 3 & 4. DOES NOT WORK IN SP8 – Some of these SSDs will crash constantly in SP8 and some will not. We tested it in our SP8 and it seems completely random; we could not tell why some worked and some did not. Capacity – 2 TB 3D NAND / 1TB. Interface – PCIe Gen 4, NVMe 1.4b (Compatible with all PCIe Gen 3 slots and systems). Sequential Read Performance = Up to 5150 MB/s. Sequential Write Performance = Up to 4850 MB/s. 1PC SN740 1TB / 2TB SSD.