Samsung's M395T6553CZ4-CE61 is a DDR2-667 Fully Buffered DIMM (FBDIMM) that delivers high-speed performance and stability for servers and workstations requiring DDR2 technology. Incorporating a 240-pin interface design, this module is constructed with Samsung's high-quality 64Mx8 9C components, totaling a 512MB capacity. Its use of Fully Buffered technology includes an advanced memory buffer to support the stability and integrity of data transmission, which is critical for mission-critical environments. Operating at 667MHz, this DDR2 memory ensures rapid data transfer rates and improved system responsiveness. The module is designed with a single rank (1Rx8) setup, optimizing its compatibility and boosting the performance of systems that rely on this older generation of memory technology. Its 512MB capacity makes it suitable for applications where modest memory upgrades are required, without the necessity for the larger capacities provided by newer memory technologies.