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Small silver 2.5 inch SAS hard drive with tray

HP Refurbished

HP 431958-B21 laptop hard drive

SKU CH-GC49-VR1AJ MPN 431958-B21

A 146GB 10000 RPM SAS 3Gb/s 2.5" internal notebook hard drive with 4ms seek time

  • Total capacity146 GB
  • Interface typeSAS 3Gb/s
  • Form factor2.5 in (6.35 cm)
  • Average seek time4 ms
  • Rotational speed10,000 RPM
  • Fast data access with 10000 RPM spindle speed
  • High-speed SAS interface at 3Gb/s transfer rate
  • Compact 2.5-inch form factor fits notebook bays
  • 146GB capacity for enterprise applications
  • Designed for HP systems with hot-swap tray

HP 146GB 10K SAS Notebook Drive

The HP 431958-B21 is a 146GB 2.5-inch internal hard drive spinning at 10000 RPM. It uses a SAS 3Gb/s interface and delivers a 4ms average seek time. This refurbished unit is built for HP laptop and mobile workstation bays that require a high-speed SAS connection.

Suits SAS Mobile Workstations Not Slower Interfaces

This drive fits mobile workstations and enterprise laptops designed for SAS 3Gb/s drives running at 10000 RPM. Buyers whose systems only support slower interfaces or lower spindle speeds should look at something else. The tray is included for hot-swap bays compatible with this form factor.

SAS 3Gb/s Interface Decides Compatibility

The single specification that decides fitment is the SAS 3Gb/s interface. Your laptop or drive bay must accept this exact protocol and connector. Without a matching SAS controller the drive will not function.

How it compares

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

Price $49.99
Cheaper than about 68% of the 645 comparable items (median $66.99).
Total capacity 146 GB
Lower than about 80% of the 419 comparable items (median 320 GB).
Price per TB $342.40 per TB
Pricier than about 65% of the 416 comparable items (median $233.48 per TB).

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Specifications

Product
Brand nameHP
Model name431958-B21
Total capacity146 GB
Performance
Average seek time4 ms
Rotational speed10,000 RPM
Ports & slots
Interface typeSAS 3Gb/s
Size & build
Form factor2.5 in (6.35 cm)
Shipping weight1.36 kg
Package size305 × 254 × 127 mm

Questions about this item

Will the 2.5-inch form factor and SAS connector fit my laptop's drive bay?

The drive uses a standard 2.5-inch form factor with a SAS 3Gb/s interface, so it fits any laptop bay and backplane that accepts 2.5-inch SAS drives.

Do I need a caddy or tray to install the 431958-B21, and which way does the SAS connector face?

The unit ships with a hot-swap tray; slide the drive into the tray until the SAS connector seats firmly against the backplane — do not force it upside-down.

How often should I check the 10000 RPM drive for errors or plan a replacement?

Run SMART diagnostics monthly; at 10000 RPM the mechanical wear is higher than slower drives, so budget a replacement after three to five years of heavy use.

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