Seagate BarraCuda 1TB 2.5" Laptop Hard Drive

Identifiers
MPN	Seagate ST91000640NS
Model	Seagate ST91000640NS
Dimensions / Weight
Key Features
Average latency The typical time delay, measured in milliseconds, between a request and its response for storage devices such as hard drives or SSDs. It reflects how quickly data can be accessed from the device and is useful for comparing performance across similar products.	4.16 ms
Data transfer rate The maximum theoretical speed at which a device can send or receive data, expressed in bits per second (bps) or its multiples such as kbps, mbps, gbps, etc. It represents the upper bound of throughput under optimal conditions and is useful for comparing performance across devices and interfaces.	6 Gbit/s
Depth The linear measurement of an object from front to back or top to bottom, expressed in a physical unit such as millimeters, centimeters, inches, etc. It indicates how deep the item is and can be used for fitting, compatibility, or spatial planning.	100.5 mm
HDD Capacity The total amount of digital storage that an internal hard drive can hold, expressed as a numeric value with an appropriate unit such as GB, MB, or TB. This attribute helps users understand how much data the device’s built‑in hard drive can store and compare storage options across products.	1024 GB
HDD size The physical width of a hard disk drive expressed in inches or centimeters. It indicates the standard size that determines which enclosures, bays, and mounting hardware are compatible with the drive.	2.5"
HDD speed The number of revolutions per minute (RPM) at which a hard‑disk drive’s spindle turns, indicating the drive’s data access performance and endurance characteristics.	7200 RPM
Height The vertical dimension of a product measured from its lowest to highest point. It is expressed in a physical unit such as millimetres, centimetres or inches and applies to any item where height is relevant, including books, electronics, furniture and other objects.	14.8 mm
Interface List of physical or logical interfaces that allow communication between a hard drive and other devices, such as SATA, M.2 PCIe, U.2, SAS, NVMe, or other standard connections.	Serial ATA
Internal Indicates whether the product is designed to be installed inside a computer system or other device, such as an internal hard drive, SSD, network card, or component. A value of "Yes" means it can be mounted within the chassis; a value of "No" indicates it is intended for external use.	Yes
Non-operating shock The mass of a component or device measured while it is not operating, expressed in grams. This value represents the total weight that the unit can sustain during shock testing and includes any internal parts and packaging if specified.	400 G
Operating shock	70 G
Operating voltage The electrical voltage that a device is designed to operate at, expressed in volts (V). It may represent a single nominal value or a range indicating the minimum and maximum supply voltages compatible with the product. This attribute helps users verify that their power source matches the device’s requirements.	5 V
Read Seek Time The average time required for a storage device to position its read/write head over the correct track before accessing data. It is expressed in milliseconds (ms) and indicates how quickly the device can begin reading or writing after a command is issued.	8.5 ms
Start-up current The electrical current drawn by a device when it first powers on, expressed in amperes (A). It represents the initial surge of current required to start the product and can help users assess power supply compatibility or identify potential overload risks.	0.99 A
Storage drive buffer size The amount of temporary memory that a hard drive can hold before transferring data to the host system. Expressed as a digital capacity (e.g., kilobytes, megabytes). This attribute helps users understand how quickly a drive can process read/write operations and is useful when comparing performance across drives.	64 MB
Weight The mass of the product expressed in a standard unit such as grams or kilograms. It represents how heavy the item is and can be used for shipping calculations, handling instructions, or consumer information.	200 g
Write seek time The average time required for a storage device to move its read/write head to the desired track before performing an operation, expressed in milliseconds (ms). It indicates how quickly a drive can access data and is critical for overall performance.	9.5 ms

Seagate is a brand of computer hard drives and storage solutions. The company produces a wide range of products for both personal and business use, including external hard drives, solid state drives, and storage systems. Seagate is one of the leading providers of storage solutions in the world, and its products are known for their quality and reliability.