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DIY Bundle
Includes: 320GB 2.5" Seagate 5400RPM HDD with 16MB cache, OWC Express USB 3.0 Enclosure, and OWC 5 Piece Toolkit Mac / PC / USB 3.0 & 2.0

HD Upgrade
Get more storage when you upgrade/replace the existing 2.5" drive in your Mac.
Includes a 2.5" drive, enclosure, and toolkit to upgrade/replace the internal drive in your Mac.
Upgrade/Replace your internal drive
Give your computer the lift it needs with the do-it-yourself bundles from OWC. Upgrade your factory hard drive with a 320GB Seagate 5400RPM SATA hard drive and repurpose your existing factory drive as an external drive with the OWC Express USB 3.0 enclosure. The DIY bundle includes all the tools necessary to perform the upgrade on your own. Our free installation videos offer play-by-play instructions coupled with U.S. based live or chat support we are here for you 24/7.
The New Home for Your Factory Hard Drive
The OWC Express enclosure for your factory hard drive turns it into a sleek and stylish bus-powered external hard drive for data redundancy, back up storage or even as a media library. Free up your new internal hard drive by shuttling some of the lesser- used content off to the external.
Yes, You Can Do-it-Yourself
Upgrade with confidence using the OWC DIY installation videos. OWC is committed to your success, so if you need a bit more guidance, we are available Mon-Fri 8AM-8PM and Sat 9AM-4PM with U.S. based technical support by phone or live chat.
The Right Tools for the Job
With the 5-piece Toolkit from OWC, you have what you need to complete the installation of the Spinpoint-Momentus 320GB hard drive and once the upgrade is complete you'll have a handy set of tools for future computer upgrades.

Everything you need in one package, immediately ready to assemble and:
  • OWC Express 2.5" USB 3.0 Drive Enclosure
  • 320GB Seagate 5400RPM Hard Drive
  • OWC 5-Piece Mini Toolkit
  • High quality double-shielded USB 3.0 B to USB 3.0 A/USB 2.0 A connector cable
  • Carrying sleeve
If you Hit a Roadblock, We are Here to Help.
Should you ever need assistance with your upgrade, OWC's award winning U.S. based technical support is at the ready to answer any questions you may have via phone or live chat from 8AM-8PM Mon-Fri and 9AM-4PM Sat.
*Bus powered via USB port on most computers, provided computer's bus supplies appropriate power needs.

Includes

Mercury Elite-AL Pro includes
  • OWC Express 2.5″ USB 3.0 Drive Enclosure
  • 320GB Seagate/Samsung 5400RPM Hard Drive
  • OWC 5-Piece Mini Toolkit
    • Nylon Spudger
    • Phillips #00
    • Straight Blade 1.8mm
    • Torx T8
    • Torx T6
  • High quality double-shielded USB 3.0 B to USB 3.0 A/USB 2.0 A connector cable
  • Assembly Manual & User Guide
  • Quick Start Guide
  • Carrying sleeve

Gallery

320GB Seagate Laptop Thin Specifications:

Specifications

Form Factor
2.5″ HDD
Interface
SATA 3Gb/s
Capacity1
320GB
Formatted Capacity2
298GiB
Rotational Speed
5,400 RPM
Cache / Data Buffer
16MB
Manufacturer Model Number
ST320LT012
RoHS Compliant
Yes
Format

Physical

Height (max)
7.0mm (0.275″)
Width (max)
70.10mm (2.760″)
Length (max)
100.55mm (3.959″)
Weight (typical)
95g (0.209 lbs.)
Data Heads
2
Number of Disks
1
Guaranteed Sectors
976,773,168
Bytes per Sector
4096
Areal Density
425Gb/in2

Reliability3

Contact Start-Stops
600,000
Nonrecoverable Read Errors
1 per 1014 bits read
Warranty

Performance

Transfer Rate (Max)
3.0 Gb/s
Track-to-track Seek
1.5ms
Average Seek Time
12.0ms
Average Latency
5.6ms

Power

Maximum Start Current, DC
1.0 Amp
Seek Power
1.4 Watts
Read Power
1.2 Watts
Write Power
1.7 Watts
Idle Mode
1.2 Watts
Idle Mode, Active
0.7 Watts
Idle Mode, Low Power
0.45 Watts
Standby Mode
0.18 Watts
Sleep Mode
0.18 Watts

Environmental (Operating)

Shock
325 G max at 2ms
Ambient Temperature (°F)
41°F to 131°F
Ambient Temperature (°C)
5°C to 55°C
Vibration
2 Gs (0 to peak, 5-200 Hz)
1 Gs (0 to peak, 201-500 Hz)
Relative Humidity (non-condensing)
5 ∼ 90%
Altitude
-304.8 m to 3,048 m (-1,000 ft to 10,000+ ft)

Environmental (Non-Operating)

Shock
1000 G max at 1ms
Ambient Temperature (°F)
-40°F to 158°F
Ambient Temperature (°C)
-40°C to 70°C
Vibration
5 Gs (0 to peak, 5-500 Hz)
Relative Humidity (non-condensing)
5 ∼ 95%
Altitude
-304.8 m to 12,192 m (-1000 ft to 40,000+ ft)

Acoustics

Idle (Typical)
2.0 bels
Seek (Typical)
2.2 bels
  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.
  2. In terms of standard gigabytes, 1GiB ≈ 1.074GB and refers to the actual formatted capacity of shown under Mac OS 10.5 or earlier and Microsoft Windows OS.
  3. Specific application environments such as temperature and duty cycle will affect the overall reliability rates.

OWC Express Specifications:

Chipset

  • Asmedia USB 3.0 chipset

Interfaces Supported

  • USB 3.0, 2.0 or 1.1 Backwards compatible

Port Configuration

  • USB 3.0 SuperSpeed - (1) micro-B port

Max Data Transfer Rate

  • USB 3.0 - 500MB/s

Port/Interface Bootability

  • Can I use this solution as an external startup drive?
  • USB 3.0: Supported on Macs and PC's meeting minimum requirements. - Click for more info
  • 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 'Mavericks' 10.9.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.

Cooling

  • Super quiet fanless ventilation

Power Supply

  • Bus Power via USB on all models with USB 2.0 or 3.0 port

Drive Requirements

  • Any 2.5" Serial-ATA Drive up to 9.5mm height. Important Note: Hard Drive supported for use of this bus-powered enclosure via USB 2.0 or 3.0 port connections, use of Solid State Drive (SSD) only supported with USB 3.0 port connection.

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

Recommended USB 3.0 Cards

Operating Environment:

Temperature

  • Dependent on mechanism installed

Relative Humidity

  • Dependent on mechanism installed

Shock

  • Dependent on mechanism installed

Vibration

  • Dependent on mechanism installed
Manufacturer provided specifications for Other World Computing p/n Y3ST320LT012 UPC#: 812437027853

Customer Ratings

Write a Review 5 / 5 7 out of 7 (100%) reviewers would recommend this product
Verified Buyer
Reviewer: wall Location: seattle,WA Age: 55-65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Buy it August 30, 2017 It works, the price is good. There are no problems with it.

I would recommend this item to a friend! This review is from DIY KIT: 2.0TB Seagate / Samsung 5400RPM HDD + OWC Express USB 3.0/2.0 2.5" Enclosure. Customer Videos:

Verified Buyer
Reviewer: Sirguiome Location: Ottawa Ont. Age: 55-65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 VERY SATISFIED!!! January 8, 2017 The Mac Sales website made choosing the correct HD simple and I was able to be confident in the absolute correctness of my decision.

I would recommend this item to a friend! This review is from DIY KIT: 2.0TB Seagate / Samsung 5400RPM HDD + OWC Express USB 3.0/2.0 2.5" Enclosure. Customer Videos:

Verified Buyer
Reviewer: xcvii90 Location: South Bend, IN Age: 45-54 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Upgrade was a snap! November 13, 2016 I got everything I needed to upgrade my hard drive in my mid-2012 MacBook Pro - even the tools! The whole process was pretty painless. The price was right, and I would highly recommend this kit.

I would recommend this item to a friend! This review is from DIY KIT: 2.0TB Seagate / Samsung 5400RPM HDD + OWC Express USB 3.0/2.0 2.5" Enclosure. Customer Videos:

DIY Bundle: 320GB 2.5" Seagate 5400RPM 9.5mm HD, OWC Express Enclosure, and OWC 5 Piece Toolkit Mfr P/N: Y3ST320LT012 OWC SKU: OWCY3ST320LT012 USB 3.0 Enclosure Kit with Seagate Drive & 5 piece toolkit. 1 Year OWC Limited Warranty
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