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A solid-state drive (SSD) (also known as a solid-state disk[1][2][3] or electronic disk,[4] though it contains no actual disk, nor a drive motor to spin a disk) is a data storage device that uses integrated circuit assemblies as memory to store data persistently. SSD technology uses electronic interfaces compatible with traditional block input/output (I/O) hard disk drives, thus permitting simple replacement in common applications.[5] Additionally, new I/O interfaces, like SATA Express, have been designed to address specific requirements of the SSD technology.