Home » Internal Hard Drives and SSDs

We're sorry, but this item is no longer for sale. However, there may be more Internal Hard Drives and SSDs items available.

OWC DIY Bundle:

320GB 2.5" Seagate Drive,
OWC Express Silver Enclosure,
OWC 5 Piece Toolkit

Mac / PC / USB 2.0 & 1.1
  • Mac
  • PC
  • USB
The Drive and Tools you need to Upgrade/Replace the existing 2.5" Drive in your laptop, Mac mini, Xbox, PS3, etc + make the drive being replaced an External for data transfer, backup, and/or additional portable storage.

Everything you need in one package, immediately ready to assemble and:
  • Backup and store your data with style and confidence.
  • Take your data with you - small enough to keep in a pocket!
  • Easily add additional laptop storage with no AC adapter required.
Examples of how this bus-powered Express bundle
can be used in real world situations:

Power Users / Travelers: Relocate your "home folder" to your Express and have your files with you at home, at work or on the road without the need to synchronize your machines.

Laptop Owners: Clone your current internal SATA hard drive in your laptop to the new drive. Then install the new, larger drive in your laptop and keep the smaller drive in your Express for additional storage space.

iTunes Aficionados: Keep a copy of your iTunes library on your external drive to play on multiple machines.

Gamers: Add additional storage to your XBox 360 or PS3 game console to store music, media, and other downloads. PS3 even includes a backup utility to protect your internal drive's data.

For Everyone: Have the piece of mind of a complete backup plan. Create a bootable clone of your hard drive at regular intervals so if your computer goes down, your productivity doesn't go down with it. Boot to another computer and keep on working!

Note: This enclosure is not designed for support of SSDs and recommended to used with 2.5" Hard Drives only.
*Bus powered via USB port on most computers, provided computer's bus supplies appropriate power needs.


Mercury Elite-AL Pro includes
  • OWC Express 2.5″ SATA Hard Drive or Solid State Drive Enclosure
  • 320GB Seagate Momentus 7200.4 Hard Drive
  • OWC 5-Piece Mini Toolkit
    • Nylon Spudger
    • Phillips #00
    • Straight Blade 1.8mm
    • Torx T8
    • Torx T6
  • High Quality Double Shielded USB 2.0/1.1 (mini-B type) connecting cable
  • Express Installation Guide
  • Carrying sleeve
  • OWC 1 Year Solution Warranty with 48-Hour Turnaround Time


Seagate Drive Specs:


Storage Capacity[1]
*1GB = 1,000,000,000 bytes. Total accessible capacity varies depending upon operating environment (typically 5-10% less). The actual total capacity will depend on your own defined file settings/preferences.
Model Number
Interface SATA


Cache (MB)
Spindle Speed (RPM)


Logical CHS
Bytes per Sector

Reliability/Data integrity

Head-Rest Method
QuietStep™ Ramp Load
Load/Unload Cycles
Nonrecoverable Read Errors per Bits Read
1 per 1014 bits read
Annualized Failure Rate (AFR)
Mean Time Between Failures
Limited Warranty
3 Years

Power Management

Startup Current 5v (amps max)
Seek (watts)
Idle/Standby (watts)


Temperature (°C)
0 to 60
Shock (G)
Acoustics (bels-sound power)


Height (in/mm)
Width (in/mm)
Depth (in/mm)
Weight (lb/g)
  1. One gigabyte, or GB, equals one billion bytes when referring to hard drive capacity.

OWC Express Specifications:


  • Jmicron 20329 USB 2.0 chipset

Interfaces Supported

  • USB 2.0 / 1.1 Backwards compatible

Port Configuration

  • USB 2.0 - (1) mini "B" port

Max Data Transfer Rate

  • USB 2.0 - 480Mbps (or 60MB/sec)

Port/Interface Bootability

    Can I use this solution as an external startup drive?
  • USB 2.0: Supported on Macs and PC's meeting minimum requirements. - Click for more info

System Requirements

  • Macintosh: Macintosh running OS 8.6 to 9.2.2, OS X 10.2.x or later including 'Mountain Lion' 10.8.x, and an available USB port. Time Machine® Compatible: Mac OS X 10.5 (version introduced) and later.
  • PC: Windows 8, 7, Vista, XP, 2000, NT, 98, and an available USB port.
  • Linux: Linux compatible via supported the USB interface.


  • Super quiet fanless ventilation

Power Supply

  • Bus Power via USB on all models with USB 2.0 port

Drive Requirements

  • Any 2.5" Serial-ATA Hard Drive up to 9.5mm height. Not recommended for Solid State Drives.

External Case Dimensions

  • 3.07 in (W) x 5.12 in (D) x 0.55 in (H)

Enclosure Weight (no accessories)

  • 2.0 ounces (56g)

Product Manual

Operating Environment:


  • Dependent on mechanism installed

Relative Humidity

  • Dependent on mechanism installed


  • Dependent on mechanism installed


  • Dependent on mechanism installed


OWC 1 Year Solution Warranty

The best warranty is one you never have to use, but should the need occur - OWC is proud to provide a superior level of support and warranty coverage to our customers. Even when not used, we understand the peace of mind afforded by a longer warranty period. OWC's industry leading coverage is a testament to our confidence in the reliability of the solutions that we offer. OWC solutions are engineered to demanding quality standards in order to deliver the most reliable, highest performance available on the market in each storage category.

View more information about the OWC 1 Year Solution warranty

Manufacturer provided specifications for Seagate p/n OWCYST9320423AS

Customer Ratings

Write a Review 5 / 5 1 out of 1 (100%) reviewers would recommend this product
Verified Buyer
Reviewer: Anonymous Location: New Zealand Age: 55-65 Experience Level: Home User
Rating: 5/5 Excellently straight forward. September 17, 2012 I needed replace the HD in my Mac Mini 2010 which had thrown up a SMART error. The OWC site guided me to a range of replacement HDs (good prices) bundled with a case (to connect sop I could clone the old HD) and a minimal tool kit. All good, but the brilliant extra was the video of how to actually do the swap. Not completely straight forward; there was a screw that had to be started off with a little applied violence and turned out to have a different head to that in the video, an extra temperature(?) sensor stuck to the HD that the video did not have. Apple's continuous revise and improve thing? Maybe I chose not quite the right model but the video was excellently clear and without it the whole thing would have been a nightmare. Thanks!

I would recommend this item to a friend!

OWC DIY Bundle: 320GB 2.5" Seagate Drive, OWC Express Silver Enclosure, OWC 5 Piece Toolkit Mfr P/N: OWCYST9320423AS OWC SKU: OWCYST9320423AS SATA Enclosure Kit with Seagate Drive & 5 piece toolkit. Seagate 1 Year Limited Warranty
Sold Out