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OWC Multi-Mount®

2.5" to 3.5"and 3.5" to 5.25" bracket set


Looking to add more storage space to your Mac Pro or PC? Want the speed of SSD for your desktop too, but don't have a 2.5" hard drive bay to install it into? If you have an available 5.25" optical bay, OWC has you covered with the Multi-Mount.

With this set of high-quality powder-coated aluminum brackets, you now have the freedom to install the drives you want, where you want them. Just place the drive on the bracket, attach it via the provided drive screws, and then attach the assembly onto the drive bay's brackets via the included bracket screws.

The 2.5" to 3.5" bracket is designed for use with the 3.5" to 5.25" bracket or in bays where standard, separate connection cables are used. Compatible with side mounted bays. Not compatible with front mounted bays like those in the Mac Pro. Installation Notes:
1. Pre-2013 Mac Pros are limited to a total of two SATA connections in the optical bay. If four SATA devices are installed in the bay, only two may be connected at any given time. This is a limit of the Mac Pro's architecture.

Product Specifications

Manufacturer Part Number

  • MM35A52CMB

Package Contents

  • One 2.5″ to 3.5″ Multi-Mount bracket set with four pre-attached rubber mounted drive screws for vibration control
  • One 3.5″ to 5.25″ Multi-Mount bracket set with four pre-attached rubber isolated mounting posts
  • (4) Fine Thread Bracket Mounting Screws for 5.25" PC Bays
  • Multi-Mount Assembly Manual (Download Only)
  • Hard Drives Available Separately

Gallery

Product Family

  • one 2.5" to 3.5" bracket
  • install one 2.5" HDD or SSD in a single 3.5" bay
  • one 3.5" to 5.25" bracket
  • install up to two 3.5" hard drives in a single 5.25" bay
  • one 3.5" to 5.25" bracket and two 2.5" to 3.5" brackets
  • install two 2.5" HDDs or SSDs in a single 5.25" bay
  • one 3.5" to 5.25" bracket
  • install one 3.5" hard drive in the spare optical drive bay of your 2009/2010 MacPro
  • one 3.5" to 5.25" bracket and two 2.5" to 3.5" brackets
  • install two 2.5" HDDs or SSDs in a single 5.25" bay
  • one 3.5" to 5.25" bracket, two 2.5" to 3.5" brackets, 'Y' power adapter, & two SATA cables
  • everything you need to install two 2.5" HDDs or SSDs in your 2006-2008 MacPro
  • one 3.5" to 5.25" bracket, power adapter, & SATA cable
  • everything needed to install a 3.5" hard drive in the spare optical drive bay of a 2009 MacPro
  • one 3.5" to 5.25" bracket, power adapter, & SATA cable
  • everything needed to install a 3.5" hard drive in the spare optical drive bay of a 2006-2008 MacPro

Customer Ratings

Write a Review 4.8 / 5 34 out of 36 (94%) reviewers would recommend this product
1 2
Verified Buyer
Reviewer: MacPro-37379
Rating: 5/5 This is what you need to install a 2.5" SSD into a 5.25in bay of a Mac Pro. November 8, 2021 You need this bracket if you have already purchased a OWC Multimount to install a 2.5" or 3.5" drive into the 5.25" drive bay of a Mac Pro. The multimount I originally got only had the ability to mount one 2.5" SSD and so I needed this bracket to install a second 2.5" SSD into the 5.25" bay. You do need the multimount bracket first which allows you to mount 3.5" drives into the 5.25" bays. This bracket further allows installation of 2.5" drives.

I would recommend this item to a friend! This review is from OWC Multi-Mount: 2.5" to 3.5" Hard Drive adapter bracket set..

Verified Buyer Top 250 Contributor
Reviewer: Artysan Location: Fort Lauderdale, FL Age: 55-65 Experience Level: IT Professional Owned Product: over 6 months
Rating: 5/5 Great solution for MacPro drive multiplier August 24, 2020 Installed very easily and literally forgotten. High quality hardware.

I would recommend this item to a friend! This review is from OWC Multi-Mount: 3.5" to 5.25" Hard Drive adapter bracket set..

Verified Buyer
Reviewer: StandardNerd Location: Kamloops,BC Age: 35-44 Experience Level: IT Professional Owned Product: less than a month
Rating: 5/5 Looks nice, works June 14, 2018 Costs the same as ones that are cheap stamped steel and looks and feels way better for the same price.

I would recommend this item to a friend! This review is from OWC 2.5" to 3.5" Drive Adapter Bracket Tray - Fast and Effective.

Verified Buyer
Reviewer: CVreeland Location: Texas Age: 45-54 Experience Level: Power User Owned Product: 5-6 months
Rating: 5/5 Great tutorial, fit perfectly. April 28, 2018 Getting to the 2 hidden SATA ports on the Mac Pro motherboard wasn’t trivial, but the printed tutorial was clear & accurate, so the operation went smoothly (& presented me with a needed opportunity to dust my heat sinks) I installed a laptop drive & desktop drive in my spare DVD slot & now have more storage in my Mac Pro than I hardly know what to do with.

The OWC parts seem very sturdy & their fit & finish was perfect.

I would recommend this item to a friend! This review is from OWC Multi-Mount: 2.5 to 3.5 / 3.5 to 5.25 Hard Drive adapter bracket set for 2006-2008 Mac Pro.

Verified Buyer
Reviewer: JoeTaxpayer Location: Sudbury MA Age: 55-65 Experience Level: Power User Owned Product: 3-4 months
Rating: 5/5 A 5th drive in my MacPro February 25, 2018 The MacPro series has 2 Optical Sized bays. But, if you keep buying 3.5" hard drives and would like to install a 5th drive, this is the adaptor you need. A little screwdriver and a bit of tinkering, and it's loaded.

I would recommend this item to a friend! This review is from OWC Multi-Mount: 3.5" to 5.25" Hard Drive adapter bracket set..

Verified Buyer
Reviewer: krotusc Location: New Hampshire Age: 45-54 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Quality Item with Top Notch Customer Care January 7, 2018 Great quality adapter, but I accidentally ordered the wrong one. But, OWC customer service is top notch! They sent me the correct bracket at zero cost and told me to keep the old bracket. That is great customer care if I ever saw it!

I would recommend this item to a friend! This review is from OWC 2.5" to 3.5" Drive Adapter Bracket Tray - Fast and Effective.

Verified Buyer
Reviewer: Auroramusic Location: Modesto, CA Age: 55-65 Experience Level: Power User Owned Product: less than a month
Rating: 4/5 Good Product July 5, 2017 Very good solution to put a hard drive in the optical bay. Be careful with the screws that hold the brackets in the Mac. Make sure they are going in straight.

This review is from OWC Multi-Mount: 3.5" to 5.25" Hard Drive adapter bracket set for 2009/2010 Mac Pro..

Verified Buyer
Reviewer: Saeedphoto Location: Dubai Age: 35-44 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Well made June 27, 2017 It fits right into the CD bay and well made with great materials

I would recommend this item to a friend! This review is from OWC Multi-Mount: 2.5 to 3.5 (x2) / 3.5 to 5.25 Hard Drive adapter bracket set..

Verified Buyer Top 250 Contributor
Reviewer: Kuko Location: Calgary Age: Over 65 Experience Level: Power User Owned Product: over 6 months
Rating: 5/5 Mac Pro 2009 June 19, 2017 Perfect fit in the bay for the 5th HDD. A+

I would recommend this item to a friend! This review is from OWC Multi-Mount: 2.5 to 3.5 / 3.5 to 5.25 Hard Drive adapter bracket set for 2009/2010 Mac Pro..

Verified Buyer
Reviewer: Dean1157 Age: 55-65 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Great design! June 10, 2017 This is a quality built and thought out adapter. Installed properly, you will have no problem in knowing your drive is securely mounted. A++++++

I would recommend this item to a friend! This review is from OWC Multi-Mount: 3.5" to 5.25" Hard Drive adapter bracket set for 2009/2010 Mac Pro..

Verified Buyer
Reviewer: thecarpenter1 Location: Memphis, TN Age: 55-65 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 Superb solution to add internal drives to MacPro January 17, 2017 This mount is a slick way to install 2 more internal hard drives to a Mac Pro. As always the devil is in the details such as how many sata spaces are available in your MacPro. Since I need an internal dvd/cd burner I ended up looking for a way to get the second hard drive a sata connection. The Apricorn pcie ssd mount allowed for another 2.5" ssd and provided the needed additional 2nd sata connection. With a 36" sata cable and some careful routing of the cable this review is being posted on a 2008 MacPro 8 core with 7 internal hard drives.

I would recommend this item to a friend! This review is from OWC Multi-Mount: 2.5 to 3.5 / 3.5 to 5.25 Hard Drive adapter bracket set for 2006-2008 Mac Pro.

Verified Buyer
Reviewer: torcakey Location: New Jersey Age: Over 65 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 Just What I Needed December 26, 2016 Building a water-cooled pc. I'm using an acrylic 5.25 bay component to house a reservoir and pump for one of the loops. There's enough space for at the top for a 3.5 disk drive. This product fit he bill perfectly and gives me an ssd mounting option also.

Verified Buyer
Reviewer: GRDW Location: Eugene, OR Age: 55-65 Experience Level: Power User Owned Product: 5-6 months
Rating: 5/5 Works November 5, 2016 I accidentally ordered the wrong item. That said, it worked fine, just extra parts because of my error.

I would recommend this item to a friend! This review is from OWC Multi-Mount: 2.5" to 3.5" (x2) and 3.5" to 5.25" bracket and cable set for 2006-2008 MacPro.

Verified Buyer
Reviewer: MichaelS Location: Farmington Hills, MI Age: 45-54 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Great September 11, 2016 Good quality, easy to install. I would buy that again. I used it to install a 5th HDD with 6TB in my MacPro

I would recommend this item to a friend! This review is from OWC Multi-Mount: 3.5" to 5.25" bracket and cable set for 2006-2008 MacPro..

Verified Buyer
Reviewer: Anonymous Location: Cupertino, CA Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Allows full use of all drive bays in a Mac Pro. Easy to install. July 21, 2016 This mount allowed me to put my SSD into the lower “CDROM” bay of my Mac Pro. This meant I had the four top bays free for other drives. I used the other four HDDs in various RAID configurations using SoftRAID.

The mount was easy to install and I can add a 3.5” drive there in the future.

Note: if you do use two drives in the multi-mount, you’ll end up using the data cable that goes to the upper CDROM/DVD drive.

I would recommend this item to a friend! This review is from OWC Multi-Mount: 2.5 to 3.5 / 3.5 to 5.25 Hard Drive adapter bracket set for 2009/2010 Mac Pro..

Verified Buyer
Reviewer: Anonymous Age: 45-54 Experience Level: Hobbiest Owned Product: 1-3 months
Rating: 5/5 Excellent Product For MacPro January 1, 2016 Fast shipping and no issues with the item. Very Satisfied!

I would recommend this item to a friend! This review is from OWC Multi-Mount: 2.5 to 3.5 / 3.5 to 5.25 Hard Drive adapter bracket set for 2009/2010 Mac Pro..

Verified Buyer
Reviewer: Anonymous Location: Santa Barbara, CA Age: 55-65 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 Solid product August 23, 2015 I bought this to replace a cheap Rosewill RDRD-12001I'd purchased via Amazon. You definitely get what you pay for (in both cases). I took advantage of the Multi-Mount to install both an SSD and an HDD in my MacPro. The installation instructions were idiot proof, and the installation went very well as a result. Note I do have an official Apple tear down guide for this box and have had it apart numerous times, so I did have a bit of experience there.

I would recommend this item to a friend! This review is from OWC Multi-Mount: 2.5 to 3.5 / 3.5 to 5.25 Hard Drive adapter bracket set for 2006-2008 Mac Pro.

Verified Buyer
Reviewer: Anonymous Location: Iowa, USA Age: 55-65 Experience Level: Power User Owned Product: over 6 months
Rating: 5/5 OWC Multi-Mount: 2.5 to 3.5 / 3.5 to 5.25 Hard Drive adapter bracket set for 2009/2010 Mac Pro. April 4, 2015 This is an excellent product for adding a drive in the second DVD drive bay in from of a Mac Pro. Worked a charm.

I would recommend this item to a friend! This review is from OWC Multi-Mount: 2.5 to 3.5 / 3.5 to 5.25 Hard Drive adapter bracket set for 2009/2010 Mac Pro..

Verified Buyer
Reviewer: Anonymous Location: Greece Age: 25-34 Experience Level: Power User Owned Product: over 6 months
Rating: 5/5 Great built quality! February 17, 2015 This is a great quality product and it fitted in my mac pro like a charm. OWC shipped the product quickly and their communication was excellent!

I would recommend this item to a friend!

Verified Buyer Top 250 Contributor
Reviewer: Anonymous Location: California Age: Over 65 Experience Level: Power User Owned Product: 3-4 months
Rating: 5/5 you need this January 19, 2015 the bracket made installing the new SSD super simple, especially with OWC's videos

I would recommend this item to a friend! This review is from OWC Multi-Mount: 2.5 to 3.5 (x2) / 3.5 to 5.25 Hard Drive adapter bracket set..

Verified Buyer
Reviewer: kallim123 Location: Arnessysla, Iceland Age: Over 65 Experience Level: Home User Owned Product: over 6 months
Rating: 5/5 Brilliant To have 2 SSD´s more in my mac pro January 8, 2015 Very handy tool and easy to connect 2 more drives into my Mac Pro computer and connect to the 2 extra internal Sata ports...

I would recommend this item to a friend! This review is from OWC Multi-Mount: 2.5" to 3.5" (x2) and 3.5" to 5.25" bracket and cable set for 2006-2008 MacPro.

Verified Buyer Top 100 Contributor
Reviewer: Anonymous Location: Chile Age: 35-44 Experience Level: Power User Owned Product: over 6 months
Rating: 5/5 A pro solution January 3, 2015 Wanted to use the 4 bays of my Mac Pro for RAID so adding a fifth SSD disk on the optical bay with the OS and apps made a lot of sense. And it´s been working great. Now I´ve got four blazing fast SSD on Raid and another SSD for start up OS and Apps. This is the perfect configuration for video professionals.

I would recommend this item to a friend! This review is from OWC Multi-Mount: 2.5 to 3.5 / 3.5 to 5.25 Hard Drive adapter bracket set for 2009/2010 Mac Pro..

Verified Buyer
Reviewer: Anonymous Location: Arlington, VA Age: 25-34 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 It Works November 29, 2014 It works. Perfect for mounting SSDs in the SuperDrive bays in a MacBook Pro.

I would recommend this item to a friend! This review is from OWC Multi-Mount: 2.5 to 3.5 (x2) / 3.5 to 5.25 Hard Drive adapter bracket set..

Verified Buyer
Reviewer: Anonymous Location: England Age: 45-54 Experience Level: Power User Owned Product: over 6 months
Rating: 5/5 Nicely engineered, does the job brilliantly! November 13, 2014 Bought this to upgrade the drive capacity of my Mac Pro from 4 to 6 drives so that I could set up a dual internal raid configuration. One for work storage and the other for backup. The OWC Multi-Mount® Mfr P/N: MM35A52CMB OWC SKU: OWCMM35A52CMB allowed me to then utilise the spare connections and space below the optical drive to then instal a fast SSD drive to instal the OS and applications on, plus an additional drive to act as a scratch disk/file transfer.

It totally transformed the performance of my Mac Pro as well as the way I worked. If you are looking to add extra drives to your Mac Pro, then this upgrade is one of the best ever!

I would recommend this item to a friend!

Verified Buyer Top 250 Contributor
Reviewer: Anonymous
Rating: 5/5 Worked as described. November 2, 2014 I would recommend this item to a friend! This review is from OWC Multi-Mount: 2.5 to 3.5 / 3.5 to 5.25 Hard Drive adapter bracket set for 2009/2010 Mac Pro..
OWC Multi-Mount® Mfr P/N: MM35A52CMB OWC SKU: OWCMM35A52CMB OWC Multi-Mount: 2.5 to 3.5 / 3.5 to 5.25 Hard Drive adapter bracket set. Install one 3.5" and one 2.5" HDD or SSD in a single 5.25" bay. 1 Year OWC Limited Warranty
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