This Samsung PM991 solid-state drive is a high-performance internal storage device with a storage capacity of 256 GB. It is compatible with laptops and features a hybrid (HDD/SSD) and low noise level design. The drive type supported is internal SSD and it has an interface of M.2, NVME, and SATA III. The sleek black color and compact form factor (MZALQ256HAJD) make it a perfect fit for any laptop. With a write speed of 2x and a length of 1.7in., it is a reliable storage solution for all your needs. The Samsung PM991 is a part of the PM991 product line and is a great addition to any computer's storage system.