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Silver 3.5 inch bare hard drive with circuit board visible

HGST

HGST Deskstar 7K400 HDS724040KLSA80 400GB 7200 RPM 8MB SATA 1.5Gb/s 3.5" internal hard drive

SKU CH-SZSK-0W1FB MPN HDS724040KLSA80

A 400 GB, 7200 RPM desktop drive with 8 MB cache and a SATA 1.5 Gb/s interface

  • Total capacity400 GB
  • Interface typeSATA 1.5Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed7,200 RPM
  • Cache memory8 MB
  • 400GB capacity stores large file collections
  • 7200 RPM speed accelerates data access
  • 8MB cache smooths burst workloads
  • SATA 1.5Gb/s interface fits legacy desktops
  • Fluid Dynamic Bearing motor reduces operating noise

HGST Deskstar 7K400 400GB SATA Drive

This new 3.5-inch internal hard drive offers 400GB of storage on a SATA 1.5Gb/s interface. It spins at 7200 RPM with an 8MB cache and an 8.5ms average seek time. The Fluid Dynamic Bearing motor supports quiet, reliable operation. It suits desktop PCs needing basic magnetic storage for archives or secondary data.

Check SATA Port and Bay Compatibility

Verify your motherboard provides a free SATA data port and that your power supply includes a SATA power connector. Ensure the chassis has an available 3.5-inch drive bay with mounting screws. Confirm the operating system can recognise a drive of this capacity without additional drivers.

Fits Standard 3.5-Inch Desktop Bays

The drive mounts in any standard 3.5-inch bay using four screws and connects via two cables. It requires no special cooling beyond normal case airflow. Using this mechanical drive for bulk files frees up faster solid-state storage for the operating system and active applications.

How it compares

Measured against everything we stock in 3.5-Inch Internal Desktop HDDs, at today’s prices. Recalculated every night.

Price $177.99
Pricier than about 65% of the 4,938 comparable items (median $107.99).
Total capacity 400 GB
Lower than about 84% of the 2,372 comparable items (median 2 TB).
Price per TB $444.98 per TB
Pricier than about 90% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameHitachi GST
Product lineDeskstar 7K400
Model nameHDS724040KLSA80
Total capacity400 GB
Performance
Rotational speed7,200 RPM
Average seek time8.5 ms
Storage
Cache memory8 MB
Ports & slots
Interface typeSATA 1.5Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Shipping weight0.91 kg
Package size102 × 152 × 25 mm

Questions about this item

Does the bare-drive HDS724040KLSA80 include cables or brackets, or must I buy them separately?

The drive is supplied as a bare unit only; SATA data and power cables plus any mounting screws or brackets need to be sourced separately.

The 400 GB 7200 RPM model is the only capacity listed — is it the right choice for a desktop needing a single OS and data volume?

With 400 GB, 7200 RPM speed and 8 MB cache it suits a primary desktop volume for operating system, applications and moderate data storage.

How does the 8.5 ms average seek time affect everyday desktop responsiveness?

An 8.5 ms seek time delivers typical mechanical-drive responsiveness for boot, application launch and file access in a standard desktop workload.

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