What is the 2.5-inch drive form factor?

The 2.5-inch drive is a standardized computer drive form factor measuring 70.10 millimeters in width, introduced by PrairieTek in 1988. It is used for compact data storage devices like HDDs and SSDs.

Who invented the 2.5-inch drive?

PrairieTek introduced the 2.5-inch drive form factor in 1988, making it one of the earliest standardized drive formats.

What standards define the 2.5-inch drive?

The 2.5-inch drive is defined by the Small Form Factor Committee (SFF-8201) and the Electronic Industries Alliance (EIA-720).

What types of drives use the 2.5-inch form factor?

The 2.5-inch form factor is used for both hard disk drives (HDDs) and solid-state drives (SSDs), including models like the WD Blue SATA SSD.

Where is the 2.5-inch drive commonly used?

The 2.5-inch drive is widely used in laptops and small form-factor computers due to its compact size.

2.5-inch drive

computer drive form factor

Class type of: drive Q65037415

Facts

6 properties

Instance of: drive form factor
Inception: 1988^[4]
Subclass of: drive^[3]
Discoverer or inventor: PrairieTek^[2]
Standards body: Small Form Factor Committee, Electronic Industries Alliance^[5]^[6]
Width: 70.10 millimetre^[7]

🏷️ Also known as

en SFF-8201 en SFF HDD en 2.5" drive en 2.5" hard drive en 2.5-inch drive en 2.5-inch hard drive en 2.5-inch SSD en 2.5" SSD en EIA-720 en SFF-8200 de 2,5"-Laufwerk de 2,5-Zoll-Laufwerk es disco de 2,5 pulgadas es factor de forma de 2,5 pulgadas es unidad de 2,5″ es unidad de 2,5 pulgadas es unidad de almacenamiento de 2,5 pulgadas fi 2,5" kiintolevy fi 2,5" kovalevy fi 2,5 tuuman levy

🔖 Identifiers · 1

Image (Wikimedia Commons): OCZ Z6300 NVMe flash SSD, U.2 (SFF-8639) form-factor.jpg ↗

Report an error or request removal Lineage (PROV-JSON)

🔗 Connections

Subclass of 2

disk drive, drive

Standards body 1

Electronic Industries Alliance

Subtypes 1

WD Blue SATA SSD

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Summary

2.5-inch drive is a drive form factor^[1].

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

[2] ↑ 2.5-inch drive — discoverer or inventor (P61): PrairieTek. servethehome.com. servethehome.com. Provenance: wikidata.org.
[3] ↑ 2.5-inch drive — subclass of (P279): drive. wikidata.org.
[4] ↑ 2.5-inch drive — inception (P571): 1988. servethehome.com. servethehome.com. Provenance: wikidata.org.
[5] ↑ 2.5-inch drive — standards body (P1462): Small Form Factor Committee. wikidata.org.
[6] ↑ 2.5-inch drive — standards body (P1462): Electronic Industries Alliance. wikidata.org.
[7] ↑ 2.5-inch drive — width (P2049): 70.10 millimetre. wikidata.org.

Class ancestry

[1] ↑ 2.5-inch drive is an instance of drive form factor (Q65037409) [P31, primary]. Wikidata. wikidata.org.

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APA 4ort.xyz Knowledge Graph. (2026). 2.5-inch drive. Retrieved April 25, 2026, from https://4ort.xyz/entity/2-5-inch-drive

MLA “2.5-inch drive.” 4ort.xyz Knowledge Graph, 4ort.xyz, 25 Apr. 2026, https://4ort.xyz/entity/2-5-inch-drive.

BibTeX

@misc{4ortxyz_2-5-inch-drive_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{2.5-inch drive}}, year = {2026}, url = {https://4ort.xyz/entity/2-5-inch-drive}, note = {Accessed: 2026-04-25}}

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