Skip to main content
Free Shipping available on orders $299 & up!Shop our Specials»
  • Business Icon For Business & More icon arrow
    • Creative, Production & PostCreative, Production & Post
    • Corporate & EnterpriseCorporate & Enterprise
    • Higher EducationHigher Education
    • State, Local & K-12 EducationState, Local & K-12 Education
    • House of WorshipHouse of Worship
    • Systems IntegratorSystems Integrator
    • HealthcareHealthcare
    • Federal, State & Local GovernmentFederal, State & Local Government
    • Join Today!

      Already registered? Sign In

  • Region: Canada icon arrow
    • Select your preferredcountry / region:

    • USA RegionUSA + International
    • Canada RegionOWC Canada

    • Experience local shipping options and optimized product inventory for your region.

  • Phone Icon1-800-275-4576
  • Intl: 1-815-338-8685
MacSales.com Powered By OWC
Site Search
  • Blog
  • Support
  • Account
    • Hello, Sign In
    • My Account
    • Order Status
    • Write A Review
    • Warranty & Returns
  • Cart
MacSales.com Powered By OWC
  • Support
  • Chat Contact
  • Account
    • Hello, Sign In
    • My Account
    • Order Status
    • Write A Review
    • Warranty & Returns
  • Cart
  • Specials & Featured
  • Rocket Yard Blog
  • Chat
  • Support
      • Shop All
        • Internal Drives
        • External Drives
        • Apple & Macs
        • Docks & Connectivity
        • Cards & Readers
        • Batteries
        • Software & Apps
        • Cables & Adapters
        • Memory
        • PCIe Expansion
        • Specials & Featured
        Tech Support Home
        OWC Downloads
        OWC Manuals / OWC Mercury / OWC Mercury Assembly Manual
        OWC Mercury Assembly Manual
        Need more Speed?
        Optical Drive Solutions
        DVDs, Dual-Layer DVDs, Blu-ray, and CDs!
        OWC Memory
        Fast, High-Quality Memory
        OWC Mercury Assembly Manual

        Thank you for purchasing an OWC Mercury 5.25" / 3.5" Hard Drive case kit! Installation of your hard drive mechanism is an easy process, please use this guide to help get you up and running quickly!

        Your contents should include:

        • 5.25" Case kit shell
        • 5.25" Case Chassis
        • 5.25" Case Top Cover
        • 1 package of screws
        • 110v Power Cable
        • FireWire Cable

        You will need the following to complete assembly of this hard drive case:
        Philips Screwdriver - #1 size bit preferred

        Table of Contents
          (for CD-ROM installation)
        1. Dissasemble the case
        2. CD Mechanism Part 1
        3. CD Mechanism Part 2
        4. CD Mechanism Complete
        5. (for HD installation)
        6. Dissasemble the case
        7. HD Mechanism Part 1
        8. HD Mechanism Part 2
        9. HD Mechanism Complete
        10. Drive formatting / Setup
        1. Dissasemble the case

        Start by removing the rear screws from the left and right rear of the case.

        Once the rear screws have been removed, the top cover easily slides off.

        Remove the front bezel.

        Detatch the LED jumper wire from the FireWire bridge card. You will not need the LED for a CD mechanism installation.

        2. CD Mechanism Part 1

        Slide the CD mechanism in from the front of the case and attach the 3 cables you see here. They are audio (be sure to match up the red with with the "R" on the back of the drive mechanism), IDE and power. The drive should be set to the Master position.

        Slide the CD mechanism in fully and attach it using the provided medium sized screws. First insert the two screws on the side of the case, pictured here.

        Then turn the case over and attach the two screws to the bottom.

        3. CD Mechanism Part 2

        Once the mechanism is fully installed, place the top cover on the unit and slide it forward...

        Until the 3 rear locking tabs fully engage holding the top cover on.

        Slide the top cover back on (drive and shield not installed in this picture).

        And finally reinstall the 2 rear cover screws to complete the installation. Do not overtighten these screws!

        4. CD Mechanism Complete

        Your CD mechanism installation is complete.

        You do not need to perform any other installations. If you would like, you can view how to install a HD mechanism in this case below.

        5. Dissasemble the case

        Start by removing the rear screws from the left and right rear of the case.

        Once the rear screws have been removed, the top cover easily slides off.

        6. HD Mechanism Part 1

        Set the hard drive mechanism inside the case as shown. Be sure to route the LED wire and the CD-ROM audio wire (not used) away from the attachment point of the HD mechanism as shown. Attach the IDE cable and the power cable. Be sure to have the drive mechansim ID set to MASTER.

        Turn the case over and attach the four large screws to the bottom.

        7. HD Mechanism Part 2

        Once the mechanism is fully installed, place the top cover on the unit and slide it forward...

        Until the 3 rear locking tabs fully engage holding the top cover on.

        Slide the top cover back on (drive and shield not installed in this picture).

        And finally reinstall the 2 rear cover screws to complete the installation. Do not overtighten these screws!

        8. HD Mechanism Complete

        Your HD mechanism installation is complete.

        You do not need to perform any other installations. If you would like, you can view how to install a CD mechanism in this case.

        9. Drive formatting / Setup

        For information about formatting your drive view our Drive formatting / Setup Guide




        Helpful Links
        • About Us
        • DIY Install Videos
        • Join our Affiliate Network
        • Where to Buy (opens in a new tab)
        • Accessibility Statement
        • Sustainability is Good Business
        • Join the MacSales.com Team
        • Media+Newsroom
        • Privacy Promise
        • MacSales.com for Business
        Join the MacSales.com Newsletter

        Join hundreds-of-thousands of tech enthusiasts across the planet and gain access to specials, clearance, and holiday savings on the OWC upgrades, drives, and docks everyone loves.

        Newsletter Subscription

        Please enter a valid email address.

        • bbb
        © 2000-2026 Other World Computing, Inc., All Rights Reserved. Site Terms Guest ID:
        Your Privacy Choices
        This item has been added to your cart