2.5in SATA/SAS SSD/HDD to 3.5in SATA Hard Drive Converter

Turn Virtually any 2.5" SATA or SAS Hard Drive into a 3.5" SATA Drive

Product ID: 25SATSAS35

2.9 stars (11 reviews) |
  • Trayless design: hard drives are not mounted into separate trays/enclosures
  • Supports 2.5" form factor hard drives (HDD) and solid state drives (SSD) up to 15mm in height
  • Power indicator LED
Your price
$35.99 AUD excl. GST
$39.59 AUD incl. GST

The 25SATSAS35 2.5-inch SATA/SAS to 3.5-inch SATA Hard Drive Converter converts a 2.5-inch SATA or SAS hard drive (HDD) or solid state drive (SSD) into a 3.5-inch form factor SATA Hard Drive.

The converter provides a versatile solution for 2.5-inch drive installations, enabling you to install a 2.5-inch SATA/SAS drive in a 3.5-inch bay, drive drawer caddy/tray, or into a 3.5-inch drive enclosure.

To maximize performance and utilize the full speed potential of your SATA III hard drives, this HDD Backplane supports SATA III for transfer speeds up to 6 Gbps when paired with compatible controller.

Suitable for drives with a height of up to 15mm, virtually any 2.5-inch SATA or SAS hard drive can be made to look and function like a 3.5-inch hard drive. The drive converter includes mounting holes along the side and base, allowing you to mount the drive if needed, into a compatible system.

The Drive Converter features a trayless design for simple drive installation and removal, and is constructed of durable, yet lightweight plastics, with ventilation openings to aid air flow and help keep hard drives running cooler.

Backed by a StarTech.com 2-year warranty and free lifetime technical support.


  • Use available 2.5" hard drives in place of a 3.5" hard drive
  • Install a 2.5" hard drive into a 3.5" hard drive enclosure or backplane
  • Turn unused 2.5" hard drives into additional storage in a desktop computer
  • Use large capacity 12.5mm SATA drives as a front bay removable drive

The StarTech.com Advantage

  • A trayless design and support for 15mm drives enables quick and easy install/removal of drives, including newer high capacity drives
  • Includes mounting holes on the side and base, providing compatibility with some OEM branded systems, such as Dell
  • Can be mounted into a 3.5" front bay as a 2.5" HDD Mobile Rack or treated as a regular 3.5" hard drive
  • Maximize performance, with file transfer speeds up to 6Gbps when paired with SATA III HDD and controller

Partner Numbers

  • Dicker Data Australia 25SATSAS35
  • Ingram Micro Australia 1861033
  • UPC 065030844932


Warranty Information Warranty 2 Years
Connector(s) 1 - Drive Connectors SFF-8482 (29 pin, Data & Power, Internal SAS)
1 - Host Connectors SATA Data & Power Combo (7+15 pin)
Hardware Front Door Key Lock No
Number of Drives 1
Drive Size 2.5in
Compatible Drive Types SAS & SATA
Drive Installation Removable
Number of 2.5 inch bays 1
Fan(s) No
Packaging Information Package Height 1.3 in [34 mm]
Package Length 6.8 in [17.2 cm]
Shipping (Package) Weight 7.1 oz [200 g]
Package Width 5.6 in [14.2 cm]
Package Quantity 1
Performance Hardware Raid Supported No
Temperature Alarm No
Physical Characteristics Weight of Product 4.8 oz [136 g]
Color Black
Material Plastic
Max Drive Height 0.6 in [15 mm]
Product Length 5.7 in [14.5 cm]
Product Width 3.9 in [10 cm]
Product Height 1.0 in [25 mm]
Special Notes / Requirements Note Although mobile racks can enable a Serial Attached SCSI (SAS) drive to connect using a standard Serial ATA (SATA) connector, the hard drive controller must be SAS compatible to properly support SAS drives. SAS controllers can work with SAS and SATA drives, but most SAS drives will only work with a SAS controller.
What's in the Box 1 - Included in Package 2.5" to 3.5" HDD Converter
10 - Included in Package screws (6 round, 4 flat)



24in SATA Serial ATA Cable

This high quality SATA cable is designed for connecting SATA drives even in tight spaces.

Your price
$7.99 AUD excl. GST
$8.79 AUD incl. GST

6in Latching SATA Cable

Secure latching SATA cable designed for new system boards and SATA hard drives

Your price
$6.99 AUD excl. GST
$7.69 AUD incl. GST

24in SATA to Right Angle SATA Serial ATA Cable

Make a right-angled connection to your SATA drive, for installation in tight spaces

Your price
$7.99 AUD excl. GST
$8.79 AUD incl. GST


Talk to an Advisor

We are always ready to assist you with any questions you may have.

Live Chat (opens in new window)


Product Support

Talk to an Advisor

We are always ready to assist you with any questions you may have.

Live Chat (opens in new window)

Frequently Asked Questions

Before You Buy

Although mobile racks can enable a Serial Attached SCSI (SAS) drive to connect using a standard Serial ATA (SATA) connector, the hard drive controller must be SAS compatible to properly support SAS drives. SAS controllers can work with SAS and SATA drives, but most SAS drives will only work with a SAS controller.

For further information about SAS and SATA interoperability, refer to the following FAQ: http://www.startech.com/faq/hard_drive_controllers_sas_drive_compatibility.

Compliance and safety

Compliance letters

Safety Measures

  • If product has an exposed circuit board, do not touch the product under power.
  • If Class 1 Laser Product. Laser radiation is present when the system is open.
  • Wiring terminations should not be made with the product and/or electric lines under power.
  • Product installation and/or mounting should be completed by a certified professional as per the local safety and building code guidelines.
  • Cables (including power and charging cables) should be placed and routed to avoid creating electric, tripping or safety hazards.
*Product appearance and specifications are subject to change without notice.

Customer Reviews

(11 reviews)
2.9 out of 5 stars
  • 5 (1)
  • 4 (2)
  • 3 (4)
  • 2 (3)
  • 1 (1)
Tell us what you think of this product.
Need a little help getting started?

Check out our review guidelines.

1 - 11 of 11 Reviews
(2 Stars)

Mounting holes are incorrect

By: hospitaltech474 - 04/27/2016
We purchased 10 of these only to find out that the side mounting holes do not line up with the side mount holes on a standard 3.5" HDD. This is turn made them useless for upgrading our HP AIO because the HDD caddy is made to line up with a standard HDD mounting points. Also, the threading for said points are fine... as opposed to all standard HDD having coarse threads.
| Helpful?
Barry, Customer Support on 31/08/2016 7:35:20 AM
Hello, Thanks for your feedback. You are correct, this 2.5" to 3.5" hard drive converter does ave slightly different mounting holes compared to most 3.5" hard drives. In most cases lining up with your PC's mounting points is not an issue. However, some designs, including a lot of All-in-One (AIO) PCs, the adapter will not line up correctly. We have released a newer product, the 25SAT35HDD, which is designed to be more in line with common 3.5" hard drive mounting points. It ca be seen here: https://www.startech.com/HDD/Brackets/2-5-to-3-5-hard-drive-adapter-enclosure~25SAT35HDD We are sorry for any inconvenience this has caused and should you need anything else, please get in touch with our technical advisors by clicking the "Support" button at the top of our website. Thank You
(3 Stars)

Nice adapter - simple build quality

By: macphot1970 - 10/01/2017
This is a good quality adapter to take 2.5 drives to 3.5. I don't think the design is bad at all but the build of the unit feels cheap compared to some of the other adapters I have had. The performance of the adapter is great and can not be faulted at all. It installed perfectly into my tower and caused zero issues. Overall the product works well. "I received this product in exchange for an unbiased review"
| Helpful?
(4 Stars)

Does what I needed it to do

By: eddypo - 10/03/2017
I had a spare 2.5 inch hard drive and an open 3.5 inch bay in my desktop. This drive enclosure let me put my 2.5 inch drive into the enclosure and mount it into my desktop as additional storage. The case does feel a bit thin and cheap and the lock fell off the first time I used it. I had no issues with the lock after I put it back on. Must of came loose during shipping. It also comes with mounting screws. All in all, the drive was installed into my desktop with no issues at all.
| Helpful?
(4 Stars)

A little confusing but works (needs instructions)

By: Andrew11 - 10/13/2017
I admit that when I first got this out of the box, I didn’t know how to open the flap to access the inside of the adapter. I am not sure what symbol would have triggered my brain to pull the release catch outward, but the symbol on it just didn’t clue me in. I was also puzzled how to remove a drive once put into the adapter, there is an internal mechanism attached to the door that ejects the drive when opened fully, but if you aren’t aware of it, will also prevent the drive from seating until you close the door a little. That being said, once you figure this all out, it’s a great little adapter. I haven’t quite figured out where to install it yet; I want to install it in the front of my PC so I can swap out drives, but it seems to be made to go inside a PC where the drive bays face outwards. Only one of the screw holes line up with an HDD (rear-most, near the SATA connectors). One screw is enough, so I’m OK with this, but it’s a curious design. Once seated, the drive fits well, doesn’t rattle, and the performance is excellent. I received this product in exchange for an unbiased review
| Helpful?
(2 Stars)

Cheap but works

By: NickD_CA28 - 10/15/2017
The hard drive adaptor has been working well for me but physically very cheap and with limited mounting options, could be better. The hard drive adaptor comes in a box just barely bigger than 3.5 inch hard drive. It is made of all black plastic and raddles like there are loose parts inside when either empty or with a drive installed. When you put a drive in it, the case makes a very scary 'crack' sound. I still can't get used to the terrible sound of the door closing as it sounds like I just broke the hard drive. The open latch is clearly labeled, but at a glance the sliding lock also looks like a latch and breaks off very easy if you try and pull it. There is a blue LED light on the front that lights when it has power. The light doesn't change or flash for drive activity. The adaptor is the same size as a regular 3.5" hard drive however the screw holes are NOT in the same position so the adaptor cannot be installed where other hard drives can. Screws are included with the adaptor. The adaptor works well once the drive is in. The adapter works in SATA docking stations and connected directly to my motherboard. The hard drive adapter works as needed, but is very cheaply made with it raddling and cracking sounds and can't be mounted where 3.5" drive can be. I received this product in exchange for an unbiased review.
| Helpful?
Malcolm, Customer Support on 23/10/2017 12:04:06 PM
Thank you for sharing your review of our 25SATSAS35. We wouldn't expect there to be loose parts or a rattling sound from the 25SATSAS35, and would like to look into this further with you. This drive converter comes with a 2 year warranty and lifetime technical support. Please reach out to us by clicking Support in the grey bar at the top of our website. We have Technical Support Advisors available 24 hours, 5 days a week.
(3 Stars)

Solid performance, not so solid build.

By: Nick71 - 10/16/2017
OK, so I tried to use it internally, but the mount holes don't line up at all (can't move it forward or back in the Lenovo or CoolerMaster case internal positions I tried since they use plastic spacers that fit into the drive holes, which of course, don't line up. My son's PC is built inside an older case that has a 3.5" floppy slot. This chassis works fine in that slot. It was then that I noticed that the drive holes are spaced just fine for a 3.5" HDD, but slid backwards---aka, if the end of the drive was flush with the case--and why would anyone want their internal drive sticking OUT? OK, that being said... I popped an SSD in, and then slid the chassis into a Startech trayless 3.5" removable that I have mounted on the front of my tower, so a drive in a drive tray, in a drive tray. Fit just fine (screw holes are irrelevant this way), and works like a drive should, no performance impact on the SSD within, and invisible to the OS since it's just passing SATA through. As for the build... I like the "open" button and the sliding lock. The plastic is fine for something that doesn't get swapped too often, but doesn't feel that solid. Older trayless drive slots that I use (all Startech BTW...) are solid, and have some metal in the door/latch/housing to provide extra strength/durability. I just don't se that with this adapter. I would buy this to use SSDs in my tower, as removables. But would not recommend if it is going to be in a work environment with people that are hard on the hardware. So perfect score on actual performance, but not so much on physical build. I received this product in exchange for an unbiased review.
| Helpful?
Malcolm, Customer Support on 23/10/2017 1:14:09 PM
Thank you for sharing your review of our 25SATSAS35. We do have a variety of similar adapter options for different applications, and perhaps a different version like our 25SAT35HDD would be better suited. This drive converter comes with a 2 year warranty and lifetime technical support. If you do ever run into issues with us, please reach out by clicking Support in the grey bar at the top of our website. We have Technical Support Advisors available 24 hours, 5 days a week.
(3 Stars)

Works Well

By: Nivek - 11/22/2017
This is a decent product. I used it to put a 2.5 SSD in my tower workstation. It fit and worked well.
| Helpful?
(1 Stars)

Did not work for me

By: BDBaer - 06/28/2018
First: could not just slide in the 2.5 drive into the converter, (about 1/2 an inch stuck out the back) in the end I just removed the 8 or 9 screws placed the drive and reassembled the converter. Second: the mounting holes did match the pins on my Dell’s mount.
| Helpful?
(2 Stars)

Not the great time saver I was expecting

By: rowingpeter_s - 06/19/2019
No instructions of any kind ship with this caddy so spent first 1hr trying to slide the SSD onto the connector before closing the lid. Eventually discover that you place the SSD in place and it slides onto the internal connectors AS you close the lid. Once got past that stage thought I was home and dry but the screw locations for mounting the 3.5" box into a HP Server caddy aren't in the same locations as a standard 3.5" drive a] at most you can attach with 2x screws and b] even when you've done this and made your best approximation, it won't fit. Can't imagine any reason why screw mountings aren't standard but they are not. Approx 3-4mm out. Could be great. Not sure why it isn't.
| Helpful?
Matt, Customer Support on 21/06/2019 10:41:51 AM
We're sorry to hear our 25SATSAS35 is not fitting properly in your setup. We do have a variety of similar adapters for different applications, and a different version like our 25SAT35HDD may be better suited for your setup. If you have any questions or require any assistance, you can contact us at www.startech.com/support where our Technical Advisors are available 24 hours a day, 5 days a week to provide support.
(3 Stars)

Great for 2.5" SATA but misleading on SAS

By: FazzaGBR - 09/12/2019
Great for quickly connecting 2.5" SATA drives so they can be wiped but it's misleading to suggest that this is a SAS to SATA convertor as unless you have a SAS controller they wont work and if you have a SAS controllor you'd surely just connect the SAS hard disk drive to that? No idea what you'd plug this in to, to be able to read/write to a SAS drive.
| Helpful?
Matt, Customer Support on 13/09/2019 3:55:48 PM
We apologize for any confusion when purchasing our 25SATSAS35. This adapter allows you to connect SATA and SAS drives to a SATA controller in your computer. However, to read SAS drives your SATA controller needs to have SAS compatibility as well.
(5 Stars)

Worked brilliantly until ....

By: Odycanopie5 - 11/16/2021
... I installed Windows 10 64 bit on my PC. Nothing hot swap about it now that I can find. Under Windows 7 64 bit it was genuinely hot swap. It was the simplest thing to install and use. With Win 10 I need to power off the PC, remove the HDD installed, insert the required HDD and power on again. I can't find a solution so this is a last resort :-( . From what I've found it is a problem with Win 10 not the device. Nonetheless, with 4 HDDs ranging from 3 to 6 TB, it is a pain in the sitting apparatus it won't hot swap now. If there is a solution I'd love to know what it is.
| Helpful?
Back to top