The Micron 2550 is a solid-state drive in the M.2 2280 form factor, launched on December 6th, 2022. It is available in capacities ranging from 256 GB to 1 TB. This page reports specifications for the 1 TB variant. With the rest of the system, the Micron 2550 interfaces using a PCI-Express 4.0 x4 connection. The SSD controller is the PS5021-E21T from Phison, a DRAM cache is not available. Micron has installed 232-layer TLC NAND flash on the 2550, the flash chips are made by Micron. To improve write speeds, a pseudo-SLC cache is used, so bursts of incoming writes are absorbed more quickly. Thanks to support for the fast PCI-Express 4.0 interface, performance is excellent. The 2550 is rated for sequential read speeds of up to 5,000 MB/s and 4,000 MB/s write; random IO reaches 550K IOPS for read and 600K for writes.
The SSD's price at launch is unknown. The warranty length is set to five years, which is an excellent warranty period. Micron guarantees an endurance rating of 600 TBW, a typical value for consumer SSDs.