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Silver 2.5-inch SATA hard drive 15mm thick

Seagate

Seagate ST4000LM016 4TB 5400 RPM 128MB Cache SATA 2.5" laptop hard drive

SKU CH-G9RX-30751 MPN ST4000LM016

2.5-inch SATA laptop drive holds 4TB at 5400 RPM with 128MB cache and 15mm height

  • Total capacity4 TB
  • Interface typeSATA 6.0Gb/s
  • Form factor2.5 in (6.35 cm)
  • Cache memory128 MB
  • Average seek time12 ms
  • Rotational speed5,400 RPM
  • 4TB capacity stores 480 hours of HD video or over 1 million songs
  • 128MB cache and 5400 RPM spindle speed deliver responsive data access
  • 15mm 2.5-inch form factor fits external enclosures and ultra-slim desktop bays
  • SATA 6.0Gb/s interface with 12ms average seek time ensures broad compatibility
  • Self-Encrypting Drive option with FIPS 140-2 validation protects sensitive data

4TB 2.5-inch SATA laptop drive

This Seagate ST4000LM016 is a 4TB internal hard drive built for 2.5-inch laptop bays and external enclosures. It spins at 5400 RPM with a 128MB cache and connects over a SATA 6.0Gb/s interface. The 15mm z-height suits ultra-slim desktops and DIY portable storage boxes.

Sustained throughput on sequential workloads

The 5400 RPM spindle and 128MB cache deliver steady sequential transfer rates for large media libraries and backup jobs. Average seek time is 12ms, keeping latency predictable during long copy operations. Lower rotational speed reduces heat and power draw inside confined chassis.

15mm height decides fit

This drive measures 15mm tall, so it only fits bays and enclosures that accept that thickness. Standard 7mm or 9.5mm laptop slots will not accommodate it. Verify your device or external box supports 15mm 2.5-inch drives before purchase.

How it compares

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

Price $146.99
Pricier than about 77% of the 645 comparable items (median $66.99).
Total capacity 4 TB
Higher than about 91% of the 419 comparable items (median 320 GB).
Price per TB $36.75 per TB
Cheaper than about 95% of the 416 comparable items (median $233.48 per TB).

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Specifications

Product
Brand nameSeagate
Model nameST4000LM016
Total capacity4 TB
Performance
Average seek time12 ms
Rotational speed5,400 RPM
Storage
Cache memory128 MB
Ports & slots
Interface typeSATA 6.0Gb/s
Size & build
Form factor2.5 in (6.35 cm)
Max height15 mm
Maximum width69.85 mm
Maximum length100.35 mm
Shipping weight0.20 kg
Package size100 × 70 × 15 mm

Questions about this item

How much power does the 5400 RPM mechanism draw during continuous all-day operation?

The 5400 RPM spindle speed and 128MB cache keep power draw low for laptop use, and the 15mm height allows efficient heat dissipation inside a 2.5-inch bay.

My laptop has a SATA 3Gb/s controller; will the SATA 6.0Gb/s interface on this drive work without an adapter?

Yes, the drive is backward compatible with SATA 3Gb/s controllers, so it will operate at the slower link speed without any extra hardware.

Can I install this 15mm high 4TB drive in a bay that currently holds a 9.5mm 2TB laptop drive?

The 15mm height exceeds the 9.5mm bay clearance, so it will not fit in standard thin laptop slots; it is intended for external enclosures or ultra-slim desktop bays.

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