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Mercury M.2
250GB M.2 NVMe Solid-state Drive

The Perfect Boot Drive Boost for PC
Get more from your computer
The newest member of OWC's Mercury family of high performance SSDs is an incredible performance, capacity and reliability upgrade for M.2 NVMe equipped computers, especially as a boot drive. Perfect for gaming, the Mercury M.2 SSD delivers quicker boot times, quicker game launch times, and reduced save/load operations - so you can get gaming faster.
Cutting edge flash technology
Not all flash is created equal. The new Mercury M.2 SSD is manufactured with the latest 3D MLC NAND flash, delivering superb dependability and unmatched speed. Up to 80% faster, it's the perfect upgrade for your M.2 equipped system. Plus, with NVMe (Non-Volatile Memory Express) technology, the Mercury M.2 drives utilize four PCIe 3.0 lanes for much faster communication with the computer's processor, reducing latency.
Capacity to spare
Many systems include a small stock SSD that can fill up quickly. The Mercury M.2 SSD is available in multiple capacity options to deliver the storage space boost you need for your system. Upgrading with a Mercury M.2 SSD gives you the freedom to do more with your PC.
The trick to even better boot performance
The Mercury M.2 SSD features SLC Write Emulation technology. This means, the drive initially writes to the first layer of flash, delivering the performance advantage of single layer flash on this initial write. The result: high performance in operations like boot up, game saves and loading.
The quality you depend on
OWC SSDs are proudly designed in Austin, TX, and undergo a rigorous 7-stage testing procedure including 100% burn-in resulting in unwavering dependability. The Mercury M.2 SSDs are backed by an OWC limited warranty and free USA-based lifetime support.

Release Candidate (RC) firmware set

There are two kinds of firmware for SSDs Mass Production (MP) and Release Candidate (RC). Prior to an MP firmware release, there are beta firmware releases and an RC firmware release. Often, the RC is the same as the MP release, however there can be small changes and bug fixes made between the two. OWC has evaluated the RC for the 6Gb/s SandForce 2281 Processor and found it to be stable with no issues reported during our testing. However, as with any evolutionary product, issues may surface as different usages and configurations are employed and it is important to understand that there will be further updates and revisions.

Since no firmware update is currently offered for the OWC Mercury EXTREME Pro 6G SSD, no update page exists. To see the typical steps involved with a self performed field firmware update, please visit our 3Gb/s product update page at: http://eshop.macsales.com/Customized_Pages/Framework.cfm?page=sf_firmware.html

It is important to note that the current firmware update tool requires the use of Windows XP/Vista/7. OWC is currently working on a Mac OS based update tool, but we do not have an exact availability date.

250GB Mercury M.2 NVMe SSD:


Capacity 1
250GB useable capacity
Total Flash Memory Components: 256 GB
6 GB Allocated to real-time data redundancy and error correction
Form Factor
M.2 - 2280 "M Key"
PCIe 3.0 x4, NVMe 1.2
Formatted Capacity
Silicon Motion SM2260 Series Processor with 3% over-provisioning
SMART Attributes
Native Command Queuing
up to 32 commands
OS Requirements
Windows 7 and later
Windows Server 2008 R2 and later
macOS 10.13 High Sierra or later2
RoHS Compliant


MTBF (Mean Time Between Failures)
TRIM Support
OS Dependent


Sequential Read (Max)
up to 1872MB/s
Sequential Write (Max)
up to 1087MB/s
Random 4K Read
up to 155,000 IOPS
Random 4K Write
up to 190,000 IOPS

Environmental (Operating)

Ambient Temperature
Operating: 32°F to 158°F (0°C to 70°C)
Non-Operating: -40°F to 185°F (-40°C to 85°C)
Operating: -304.8 m to 3,048.0 m (-1,000 ft to 10,000 ft)
Non-Operating: -304.8 m to 12,192.0 m (-1,000 ft to 40,000 ft)


Idle (Typical)
0.0 bels
Seek (Typical)
0.0 bels
  1. 1GB = 1,000,000,000 bytes. Total accessible capacity varies depending upon operating environment (typically 5-10% less). The actual total capacity will depend on your own defined file settings/preferences. 
  2. Requires a compatible external enclosure. Not a compatible replacement for the internal drive in any Mac computer.
Manufacturer provided specifications for Other World Computing p/n S3DAPB4NV02 UPC#: 812437029413


This product is compatible with... Learn how to find your Mac's model ID
PC Desktop
PC Compatible
Compatible with Intel / AMD based desktop/laptop PCs equipped with M.2 SSD bay.
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OWC Mercury M.2 250GB M.2 NVMe Solid-state Drive Mfr P/N: S3DAPB4NV02 OWC SKU: OWCS3DAPB4NV02 High performance NVMe solid-state drive upgrade for M.2-equipped computers 3 Year OWC Limited Warranty
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