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Item#: N82E16820148795

Crucial M550 CT256M550SSD3 mSATA 256GB SATA 6Gb/s MLC Internal Solid State Drive (SSD)

  • mSATA
  • 256GB
  • SATA 6Gb/s
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Learn more about the Crucial CT256M550SSD3


Device Type
Internal Solid State Drive (SSD)
Used For


Form Factor
Memory Components
SATA 6Gb/s


Max Sequential Read
Up to 550 MBps
Max Sequential Write
Up to 500 MB/s
4KB Random Read
Up to 90,000 IOPS
4KB Random Write
Up to 80,000 IOPS
1,500,000 hours


Load files and programs almost instantly

Boot up almost immediately

Accelerate demanding applications

Download massive files in seconds rather than minutes

Manage power so your battery lasts longer

Encrypt and protect personal data against loss or theft

Achieve top speeds without sacrificing reliability

Native Write Acceleration

Redundant Array of Independent NAND (RAIN)

Multistep Data Integrity Algorithm

Adaptive Thermal Protection

Power Loss Protection

Data Path Protection

Active Garbage Collection

TRIM support

Self Monitoring and Reporting Technology (SMART)

Error Correction Code (ECC)

Device Sleep support


Operating Temperature
0°C ~ +70°C

Package Content

Package Content
Crucial M550 solid state drive
Mounting screws

Quick Info


  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years

Customer Reviews of the Crucial CT256M550SSD3

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  • Dan N.
  • 5/26/2014 9:15:05 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsBlazing fast

This review is from: Crucial M550 CT256M550SSD3 mSATA 256GB SATA 6Gb/s MLC Internal Solid State Drive (SSD)

Pros: Originally bought this as a replacement for an existing mSATA drive that was thought to be failing in a client notebook. It turns out it wasn't, leaving me with the choice of either returning it or using it myself. I chose the latter. We installed this in a Dell Precision Workstation T1700 desktop PC, using an Addonics 4-port RAID mSATA to PCIe x4 adapter. It's set up as our primary boot drive running Windows 8.1.

Boot times are like nothing I've ever seen. We see only a flash of the Windows logo (maybe 1 second), and then the desktop appears faster than our monitor can switch modes to show it. Programs load near-instantly--at least as fast as if they were already cached in RAM. With two less (RAID) hard drives spinning, the machine is now whisper silent.

I'm floored at how fast this PC is now, simply making the one single change to move the OS to this mSATA drive.

Cons: As with any SSD product, you will pay a higher price-per-Gig when comparing them to conventional hard drives. This is only really a "con" when comparing to cheap mechanical drives.

Other Thoughts: Moving to SSD, and particularly a PCIe-mounted mSATA such as the Crucial M550 may be the best "bank for the buck" performance dollar you can spend.

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Item#: N82E16820148795
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