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Silver 2.5 inch SATA hard drive with circuit board visible

HP

HP 655710-B21 1TB 7200 RPM SATA 6.0Gb/s 2.5" laptop hard drive

SKU CH-4XV1-ETHA7

A 2.5 inch SATA 6.0Gb/s laptop hard drive with 1TB capacity and 7200 RPM for server use

  • Total capacity1 TB
  • Interface typeSATA 6.0Gb/s
  • Form factor2.5 in (6.35 cm)
  • Rotational speed7,200 RPM
  • Max height15.7 mm
  • Maximum width75.7 mm
  • 1TB capacity for large server storage needs
  • 7200 RPM speed for responsive data access
  • SATA 6.0Gb/s interface for fast transfer rates
  • 5 inch form factor fits compact server bays
  • Rotational vibration sensors boost enterprise reliability

HP 655710-B21 1TB 7200 RPM SATA 6.0Gb/s

This HP 655710-B21 is a 1TB laptop internal hard drive spinning at 7200 RPM over a SATA 6.0Gb/s interface. It uses a 2.5-inch form factor with a maximum height of 15.7 mm and is supplied new. The drive is designed for server environments where cost and capacity are priorities.

Suits server builds needing midline capacity

It suits administrators adding non-mission-critical bulk storage to compatible 2.5-inch bays that accept a 15.7 mm drive height. It is not for buyers who need a thinner drive for slim laptops. It is also not for systems that require a 3.5-inch form factor or an interface other than SATA.

15.7 mm maximum height decides fit

The single specification that determines compatibility is the 15.7 mm maximum height. Verify that the target chassis or drive cage accepts this dimension 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 $60.99
Cheaper than about 55% of the 645 comparable items (median $66.99).
Total capacity 1 TB
Higher than about 90% of the 419 comparable items (median 320 GB).
Price per TB $60.99 per TB
Cheaper than about 90% of the 416 comparable items (median $233.48 per TB).

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Specifications

Product
Brand nameHP
Model name655710-B21
Total capacity1 TB
Recommended useIdeal for Servers
Performance
Rotational speed7,200 RPM
Ports & slots
Interface typeSATA 6.0Gb/s
Size & build
Form factor2.5 in (6.35 cm)
Max height15.7 mm
Maximum width75.7 mm
Maximum length118.6 mm

Questions about this item

Does the HP 655710-B21 include a mounting bracket or caddy, or must one be purchased separately?

The drive is supplied as a bare 2.5" SFF unit; any tray, caddy or mounting screws required by your server chassis are sold separately.

The listing mentions both 2.5-inch SFF and 3.5-inch LFF midline drives — which form factor does model 655710-B21 use?

This model is the 2.5-inch Small Form Factor version with a 15.7 mm z-height, not the 3.5-inch LFF variant.

What does the 6.0 Gb/s SATA interface mean for actual throughput once the drive is installed in a server?

The 6.0 Gb/s link sets the bus ceiling; sustained transfer rates are determined by the 7200 RPM platters and will be lower than the interface maximum.

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