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The Seagate Momentus Thin 320GB internal hard disk drive offers fast and efficient data processing in a sleek package. At seven millimeters, this Seagate product is an ultra-slim HDD for laptops and even for desktops with 2.5-inch HDD bays. The Momentus Thin has a spindle speed of 7200 RPM with a buffer cache of 16 megabytes and a SATA 3 GB/s NCO connectivity. It comes with several important features such as the proprietary Seagate Self-Encrypting Drives (SED), which deliver government-grade data security without sacrificing performance. This Seagate accessory is ideal for entry-level to high-performance laptops, netbooks, and other slim consumer electronic devices.Due to space and other hardware constraints, finding a laptop hard drive compatible with your electronic accessories can be tedious. This hard drive has a 2.5-inch form factor. Because laptop cases tend to have significant space constraints, this unit works particularly well in a laptop. Since it is so thin, it can even be used in a notebook to significantly increase its data capacity while retaining its slim profile. For desktop computers, this unit can easily fit into your case, letting you store more data on your desktop while reducing clutter. By packing 320GB of storage into its frame, it gives desktop users a great place to store their media files without cluttering either their main hard drive or costing them too much in space. As far as performance goes, this Seagate laptop drive can get you the data you need quickly. The 7200 RPM engine allows your laptop or desktop computer to quickly access any disk address, decreasing disk I/O latency. A 16MB buffer keeps critical data ready for whenever the CPU needs it. This unit makes good use of the 3GB/s SATA connection, allowing you to connect to any SATA-compatible system. Since the SATA interface is the standard in data storage connectivity, it allows you to connect to almost any kind of laptop or desktop motherboard. The Seagate Momentus comes with a variety of hardware optimizations that further increase the performance of your system. QuietStep and Think Green technologies reduce the sound output and power consumption of your unit, saving you money on your energy bill while saving the planet. Native Command Queuing internally optimizes the order in which read and write requests are processed by these drives, resulting in a dramatic increase in performance. A Fluid Dynamic Bearing motor increases the speed at which the computer can access data while reducing the likelihood of the device sustaining damage.The 3D defense system increases the reliability of these accessories by absorbing internal shock, keeping your data secure while you are on the go. To increase storage density, these devices use perpendicular magnetic recording, allowing the disk to store bits more closely together. The Momentus uses Seagate Secure to allow you to encrypt your drive securely, quickly, and easily. These devices are also bundled with free Seagate SeaTools software. You can use this software so that you are always aware of the status of the SATA interface and the overall performance of the Momentus Thin.