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Silver 2.5 inch bare laptop hard drive with IDE connector

HGST

HGST IC25N020ATCS04-0 20GB 4200 RPM IDE 2.5" laptop hard drive

SKU CH-3VDS-WDRVJ MPN IC25N020ATCS04-0

20 GB 2.5" laptop IDE drive spins at 4200 RPM with Ultra ATA66 interface

  • Total capacity20 GB
  • Interface typeIDE Ultra ATA66 / ATA-5
  • Form factor2.5 in (6.35 cm)
  • Packaging typeBare Drive
  • Rotational speed4,200 RPM
  • New 20 GB storage for legacy laptop upgrades
  • 4200 RPM spindle speed for low power draw
  • IDE Ultra ATA66 / ATA-5 interface matches older notebooks
  • 5 inch form factor fits standard drive bays
  • TravelStar 40GN series built for mobile reliability

20GB IDE Ultra ATA66 2.5" Drive

The HGST TravelStar 40GN IC25N020ATCS04-0 is a new 20GB laptop internal hard drive with a 4200 RPM spindle speed. It uses the IDE Ultra ATA66 / ATA-5 interface and a 2.5 inch form factor. The unit is supplied as a bare drive without cables or brackets.

Suits legacy IDE notebook repairs

This drive fits older notebooks that require a 2.5 inch IDE Ultra ATA66 / ATA-5 storage device. It is not suitable for systems that only accept Serial ATA connections or that need a higher capacity than 20GB. Buyers restoring vintage laptops with IDE controllers will find it compatible.

IDE Ultra ATA66 / ATA-5 interface decides fit

The single specification that determines compatibility is the IDE Ultra ATA66 / ATA-5 interface. Verify that the target notebook uses this exact interface before purchase. The 4200 RPM speed and 20GB capacity are fixed characteristics of this model.

How it compares

Measured against everything we stock in 2.5-Inch Internal Laptop HDDs, at today’s prices. Recalculated every night.

Price $70.99
Typical for this category: the median of 645 items is $66.99.
Total capacity 20 GB
Lower than about 99% of the 419 comparable items (median 320 GB).

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Specifications

Product
Brand nameHitachi GST
Product lineTravelStar 40GN
Model nameIC25N020ATCS04-0 (07N8325)
Total capacity20 GB
Performance
Rotational speed4,200 RPM
Ports & slots
Interface typeIDE Ultra ATA66 / ATA-5
Size & build
Form factor2.5 in (6.35 cm)
Shipping weight0.91 kg
Package size25 × 25 × 25 mm

Questions about this item

Does the IDE Ultra ATA66 / ATA-5 interface limit throughput to 66 MB/s in practice?

Yes, the Ultra ATA66 specification caps the burst transfer rate at 66 MB/s, so sustained speeds will be at or below that figure.

What physical dimensions and mounting does the 2.5 inch TravelStar 40GN need?

The drive uses the standard 2.5 inch form factor with a 44-pin IDE connector and mounts in any laptop bay or caddy that accepts a 2.5 inch IDE drive.

How is this bare drive installed, and which step is often missed?

Connect the 44-pin IDE ribbon and set the master or slave jumper on the drive before securing it in the bay; forgetting the jumper setting is the common error.

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