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Seagate HN-M101MBB/EX2 1TB Mobile HDD: 2.5-Inch SATA Drive — main product image
Seagate

Seagate HN-M101MBB/EX2 1TB Mobile HDD: 2.5-Inch SATA Drive

Expand your laptop storage with this reliable 1TB 2.5-inch SATA internal hard drive from Seagate.

$94.51*
✓ In Stock on Amazon.com
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*Price sourced from Amazon.com. Last updated:Sep 04, 2026.Price and availability are subject to change — details.

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Overview

The Seagate HN-M101MBB/EX2 is a 1TB 2.5-inch internal hard drive built for laptops and other portable computing devices. It connects via a standard SATA 3.0 Gbps interface, making it compatible with a wide range of older and current laptops that support 2.5-inch SATA drives. With a 5400RPM spindle speed, the drive is optimized more for energy efficiency and quiet operation than for outright performance, which is a reasonable trade-off in a mobile context where battery life and noise matter.

At 1TB, this drive offers a significant amount of storage for documents, media files, and applications. It is sold as a bare internal drive, meaning it ships without an enclosure, cables, or software — you simply install it in a compatible laptop bay or a third-party external enclosure. For users who need a cost-effective way to add or replace storage in an aging laptop without moving to a more expensive SSD, the Seagate 1TB Mobile HDD fills that role capably. Keep in mind that as a mechanical drive, it is more susceptible to damage from drops and impacts than a solid-state drive.

Key Features

1TB 5400RPM

Buffer DRAM Size: 8 MB

Interface: SATA 3.0 Gbps

Specifications

Capacity
1TB
Form Factor
2.5-Inch
Interface
SATA 3.0 Gbps
Spindle Speed
5400RPM
Cache
8MB / 32MB (varies by listing)
Drive Type
Internal Bare Drive

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Frequently Asked Questions

This is a 2.5-inch SATA drive designed for laptops and portable devices that accept standard SATA 3.0 Gbps connections.
The drive operates at 5400RPM, which prioritizes lower power consumption and quieter operation over raw speed, making it well-suited for general storage in portable devices.
The drive comes unformatted as a bare internal drive. You will need to initialize and format it through your operating system's disk management utility before use.
The product lists both 8MB and 32MB buffer sizes across its specifications. Verify the exact cache size for your specific unit, as variants of this model may differ.

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