Seagate BarraCuda 4TB (ST4000LM024) 2.5-inch Laptop Hard Drive – 15mm, 5400 RPM, 128MB Cache (New)

The Seagate BarraCuda 4TB (ST4000LM024) is a 2.5-inch, 15mm SATA hard drive with a 5400 RPM spindle and 128MB cache. It adds high-capacity storage to external enclosures, desktops and devices that accept 15mm drives.

Deep-Dive Story & Problem/Solution

More Storage Without Replacing Your Device

Laptops and compact systems often ship with small drives that fill up quickly with games, photos and work files. Replacing the whole device is expensive; swapping in a larger 2.5-inch drive is not.

The ST4000LM024 provides 4TB in the standard 2.5-inch form factor. At 15mm thick it is ideal for external USB enclosures and desktops; check that your device accepts 15mm drives before buying. This model uses SMR recording, optimised for capacity in single-drive use rather than RAID.

Balanced Speed and Power Efficiency

The 5400 RPM spindle and 128MB cache, together with Multi-Tier Caching Technology, provide responsive everyday performance while keeping power draw low to help preserve battery life.

Versatile 2.5-Inch Upgrade

Beyond laptops, the drive works in many game consoles, mini PCs and USB-to-SATA enclosures, making it a flexible way to add portable or secondary storage.

Setup Instructions

How to Install the Seagate BarraCuda 4TB

1. Back up your data, power off the device and disconnect the charger and battery where possible.
2. Remove the drive bay cover and transfer any caddy or bracket from the old drive to the new one.
3. Slide the drive into the SATA connector, secure it and replace the cover.
4. Clone your old drive or install a fresh OS, or initialise and format it as secondary storage.