The Crucial P3 Plus PCIe Gen4 M.2 NVMe SSD uses a Phison PS5021-E21T controller with capacities from 512GB to 4TB. This was the first drive we've seen from the company since the
The Phison E12 Reference Design Preview: A Next-Gen NVMe SSD Controller
phison 512 gb nvme M.2 SSD | eBay
Phison E12 NVMe PCIe 3.0 x4 Controller Preview: Phison Turns Things Up a Notch | The SSD Review