Name: ST940815A Seagate 40GB 5400RPM 2.5-inch ATA-100 8MB Cache Internal HDD
Brand: Seagate
SKU: ST940815A
Price: 235.06 USD
Availability: InStock
Rating: 4.8 (119 reviews)

Product Overview
The Seagate Momentus 5400.3 is a 2.5-inch internal hard drive that offers moderate storage capacity and performance for mobile devices or compact desktops. It fits into laptops and similar systems where size and power draw are important considerations, supporting routine data storage and access needs.

General Information
Brand	Seagate
Part Number	ST940815A

Technical Information
Capacity	40GB
Form Factor	2.5-inch
Disk Format	2.5-inch PATA (ATA-100)
Cache	8MB
Spindle Speed	5400 RPM
Hot Pluggable	No
Hot Swappable	No
Hybrid Drive	No
Compatible For	Laptop,Notebook

Interfaces/Ports
Interface	ATA-100

Physical Characteristics
Height	9.5 mm
Width	69.85 mm
Depth	100.2 mm
Dimensions	9.5 x 69.85 x 100.2 mm
Condition	Refurbished
Weight	3.00

Miscellaneous
Eco Friendly	Yes
Compliance Standards	WEEE, RoHS, CE, FCC

Product Description
The Seagate Momentus 5400.3 is a 2.5-inch internal hard drive designed primarily for laptops and compact systems. It stores and retrieves data efficiently with its 40GB capacity and moderate spindle speed, making it suitable for general computing tasks or secondary storage. Often found in older notebooks or portable devices, this drive is built to fit in tight spaces where a full-sized drive would not be practical. It's typically used by individuals or businesses needing straightforward storage without the high-speed demands of modern SSDs. Key Features Compact 2.5-inch form factor fits most laptop bays ATA-100 interface offers consistent compatibility with many systems 8MB cache helps smooth out data access during typical use 5400 RPM speed balances energy consumption and quiet operation 40GB capacity suitable for basic file storage and backup This hard disk drive is commonly deployed in older laptops or embedded systems where space and power efficiency are priorities. It provides reliable storage for everyday applications such as document storage, media files, and backups without the complexity of newer drive technologies.

Use Cases
The Seagate Momentus 5400.3 is designed for mobile computing environments where compact form factor and low power consumption are critical. It is well-suited for small business laptops, fieldwork devices, and embedded systems that require reliable storage without compromising battery life or space. How It's Used: Integrated into corporate laptops used by mobile professionals needing dependable data storage on the go. Embedded within point-of-sale terminals in retail environments requiring consistent transaction data access. Deployed in remote office workstations where low power use supports longer device uptime. Used in compact desktop systems for small to medium businesses that prioritize space-saving hardware. Installed in ruggedized portable devices utilized in field research or industrial monitoring applications. This hard drive's balance of capacity and power efficiency supports operational continuity in environments where mobility and device compactness are essential. By fitting into systems with physical and energy constraints, it enables scalable deployment of storage solutions in distributed and edge computing scenarios.