This Samsung PM991 SSD is a high-quality, internal storage solution with a capacity of 512GB. It uses the M.2 interface for fast data transfer and has an NVMe protocol for even faster speeds. This SSD is perfect for upgrading your computer's storage or building a new computer. The brand is Samsung, a reputable and reliable company known for producing top-of-the-line electronics. This SSD is compatible with various computer systems and is easy to install.