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HP 600 GB 2.5" Internal Hard Drive
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HP 600 GB 2.5" Internal Hard Drive
  • NAND Flash Memory Type: Hard Drive
  • Model #: 785103-B21
HP 431958-B21 146GB 10000 RPM SAS 3Gb/s 2.5" Internal Notebook Hard Drive
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WD 1 TB 2.5-Inch Laptop Mainstream WDBMYH0010BNC-NRSN
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  • $87.99 
Western Digital 120GB WD1200BEVT-00A23T0 Factory recertified Laptop Hard Drive
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  • $44.99 
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DELL G108N  73Gb 15000Rpm Sas3Gbits 16Mb Buffer 2.5Inch Hard Disk Drive With Tray
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  • $19.99 
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DELL G731N 147Gb 10000Rpm 16Mb Buffer Sas3Gbits 2.5Inch Hard Disk Drive With Tray
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  • $39.99 
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HPE 492620-B21 300 GB Hard Drive - 2.5" Internal - SAS (3Gb/s SAS)
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  • $26.00 
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AXIOM 4TB 6GB/S SATA 7.2K RPM LFF HOT-SWAP HDD FOR HP - 861678-B21
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  • $550.99 
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Dell Server PowerEdge M600 Hard Disk SAS 900GB Savvio 10K 05J9P
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  • $62.99 
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Hitachi Travelstar Z7K320 HTS723232A7A364 320 GB 2.5' Internal Hard Drive - 20 Pack
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  • $29.95 
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Dell YP778 - 300GB 3.5" SAS 15K 3Gb/s HS Hard Drive
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  • $49.99 
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HP Toshiba MQ01ACF050 2.5" SATA 500GB S/N 64N6C6WJT P/N: 724967-001
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  • $25.99 
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DELL Xx2X2 6Gb Sas Daughter Board Controller Card For C6145
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  • $40.00 
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HGST 500GB 7.2K RPM 3.5" 9.5mm SATA,
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  • $20.00 
Western Digital 500GB WD Blue Mobile Hard Drive - 5400 RPM Class, SATA 6Gb/s, 16MB Cache, 2.5" - WD5000LPCX
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Used - Very Good Western Digital 500GB WD Blue Mobile Hard Drive - 5400 RPM Class, SATA 6Gb/s, 16MB Cache, 2.5" - WD5000LPCX

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  • Height (maximum): 7mm
  • Width (maximum): 69.85mm
  • Length (maximum): 100.20mm
  • Model #: WD5000LPCX
1TB Toshiba L200 2.5-inch SATA III Internal Laptop Hard Drive 5400rpm 8MB Cache
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  • $58.99 
  • $6.81 Shipping

Laptop internal hard drives are the most popular of storage devices for laptops on the market. Hard drives vary in storage capacity, data access speeds and form factors. It is critical to establish basic requirements when considering a hard drive. After all, your laptop’s internal hard drive stores all your information, OS and programs. Whether you are looking to replace the hard drive in your general use or work laptop, Newegg has the right hard drive for you.

Laptop Internal Hard Drives Provide Large Data Storing Capacities

Upgrading or getting a new notebook internal hard disk drive offers you an opportunity to increase your storage, especially if you have been struggling with what you already have. Options available have gone from the norm of 500GB to 1TB of storage. Some units can hold as much as 2TB, 4TB, 5TB and higher storage capacities. Modern disks feature integrated controllers with 64 to 128MB data caches that ensure fast access to stored data. Interfaces like SATA allow data transfer rates of up to 6 gigabits per second, while some models feature SAS, SCSI, or Thunderbolt™ interfaces, which meet specific data transfer requirements.

Achieve Improved Performance and Advanced Storage Management

The internal hard disk drive also affects your laptop’s load times and overall performance. Hard drives are responsible for how fast you sift through files, and copy and paste your data. The drives also manage the loading of programs. Hard drives feature one or more spinning magnetic disks for data storage, and multiple moving heads that transfer information between platters. The rotational speed of the spinning disk reads and logs speeds you achieve in real-time. Most laptop and desktop internal hard drives spin at 5,400 to 7,200 revolutions per minute. Hard drives with 10,000 or 15,000RPMs offer fast performance for programs that work with large files. There is the option of purchasing variable-speed drives that use less energy, with speeds running between 5,400 and 7,200RPMs. High-quality hard drives are suitable for programmers, allowing the loading of complex applications. The Multi-Tier Caching technology simplifies data transfers to save users time for other computing tasks.

Standard Form Factors and Connectors for Easy Installation

A hard disk drive comes in two standard form factors: the 3.5-inch drive and the 2.5-inch drive. These measurements refer to the data platter sizes. The 2.5-inch range is smaller, so they can fit in laptops and small portable enclosures like desktop external hard drives and mobile hard disk drive applications. For example, a notebook internal hard drive is a 2.5-inch drive. These 2.5-inch laptop internal hard drives require less power to spin, drawing power from the laptop without using an external power supply. Portability is another advantage of hard drives, so employees can ship them without worrying. Hard drives also come with one connector built-in.  Since 2007, most laptops use the SATA interface that offers simple configuration. A SATA internal hard disk drive works as an external hard drive using hard drive enclosures. Other drives like Mac hard drives have built-in Thunderbolt connections for high-resolution video streaming.

Bestselling Laptop Internal Hard Drives Reviews:

James M.
4/15/2025 2:41:00 AM
WD Internal Laptop Disk Drive 2TB

“ Twice storage over OEM drive for Acer Laptop. ”

WD Blue WD20SPZX 2TB 5400 RPM 128MB Cache SATA 6.0Gb/s 2.5" Internal Notebook Hard Drive
viralkumar p.
6/8/2022 4:28:55 PM
WORKS GREAT

“ OTHER THEN THICKNESS ITS WORKS PERFACTLY INMY LAPTOP. ”

Seagate 5TB BarraCuda 5400 RPM 128MB Cache SATA 6.0Gb/s 2.5" 15mm Laptop Internal Hard Drive ST5000LM000