The 128GB Surface Pro 4 models use perhaps the worst NVMe based SSD in production (link is closest model on Samsung's site, but specs line up with benchmarks) : Surface
Microsoft Surface Pro 4 (Core i5, 128 GB) Tablet Review - NotebookCheck.net Reviews
MZFLV128HCGR-000MV - Samsung 128GB SSD Hard Drive | eBay