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Sonnet Transposer™

Universal 2.5" SSD to 3.5" drive tray Adapter

Looking to add 2.5" Solid State Drives to your storage pool?
The problem is that if you want to install them in your desktop computer or multi-drive storage system, you can't use them out of the box-they're too small. Sonnet's Transposer is the solution you need-it adapts any 2.5" form factor SATA SSD (or hard drive) to any 3.5" form factor drive tray, without cables or hassles. Transposer enables you to readily add SSDs to your system.
How does it work?
Simply plug in the smaller drive to the Transposer's mating connector, secure the drive with the provided screws, and then install the Transposer/drive assembly like you would any 3.5" drive. Offering a tailor-made fit, this Sonnet adapter secures the 2.5" drive from the bottom, making Transposer compatible with drives from 7mm to 15mm tall.

Standard position mounting holes on Transposer's bottom and sides, equivalent to those found on a 3.5" hard drive, give you the flexibility to mount it anywhere a 3.5" drive is used.
Transposer provides a rigid base to secure your SSD or hard drive.
Its specially-engineered open-frame aluminum heatsink design delivers effective heat dissipation, especially important to maintain the long-term reliability of high-performance SSDs and hard drives. Transposer's fixed mount connectors are attached to a simple circuit board, assuring solid connections betweeen devices, and the outside connector is positioned to plug into a backplane as the tray is inserted.

Other advantages of this simple design include great compatibility and undiminished speed-Transposer is compatible with 3Gb/s and 6Gb/s SATA SSDs and hard disk drives. Because no bridge chip is used, Transposer does not cause any loss in data transfer speeds. Transposer takes the guesswork out of securely adapting a 2.5" SSD for use in 3.5" drive tray-it just works!

Product Specifications

Manufacturer Part Number

  • TP-25ST35TA


  • 4" x 5.4" x .7" (101.6 x 138.25 x 17.6 mm)

Drive Compatibility

  • 2.5" SATA SSD and hard disk drives

Drive Tray Compatibility

  • Any drive tray compatible with 3.5" drives

Package Contents

  • Transposer 2.5" SSD to 3.5" drive tray adapter
  • Drive mounting screws


Customer Ratings

Write a Review 2.5 / 5 1 out of 2 (50%) reviewers would recommend this product
Verified Buyer
Reviewer: Anonymous Location: Seattle Age: 35-44 Experience Level: Home User Owned Product: 1-3 months
Rating: 4/5 Very good fits on mac pro 1.1 February 17, 2013 I would recommend this item to a friend!
Verified Buyer
Reviewer: rcalias Location: Hong Kong Age: 45-54 Experience Level: IT Professional Owned Product: less than a month
Rating: 1/5 NO HEAD SINK!! August 16, 2012 The delivered item is not the same as the picture as shown on the macsales.com web page. There is no head sink!! Basically, it is a similar solution as the "Newer Technology AdaptaDrive 2.5" to 3.5" Drive Converter Bracket". I selected "Sonnet Technology Transposer Universal 2.5" SSD to 3.5" drive tray" is because of the head sink feature. It is $33.99 more expensive than the Newer Technology solution, however the delivered item is the similar solution!! Totally disappointed!!

Response from MacSales.com, Marketing August 16, 2012 Is seems that Sonnet has changed the design slightly from the pre-production rendering (as shown on our website) to the final product (which the description page does now reflect). however, there are no changes in functionality or overall footprint and the aluminum design is a heat sink. The only real change is that the Sonnet "S" is not worked into the left side of the aluminum as shown in your picture #3
Sonnet Transposer™ Universal 2.5" SSD to 3.5" drive tray Adapter Mfr P/N: TP-25ST35TA OWC SKU: STITP25ST35TA Fits all 3.5" SATA drive bays, including desktops, enclosures, or backplane trays as found in the Mac Pro. Fully SATA 3.0 Revision (6Gb/s) compliant. Sonnet Technologies 1 Year Limited Warranty Ships: 24-48 hrs Only $49.95OWC Price $29.00
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