x4 PCI Express 3.0 to M.2 PCIe NVMe SSD Adapter

Connect a PCIe M.2 SSD (NVMe or AHCI) to your computer through PCI Express for ultra-fast data access

Product ID: PEX4M2E1

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  • Boost system speed and performance by adding a PCIe M.2 SSD to your PC
  • Supports PCIe M.2 SSDs (NVMe and AHCI): 2242, 2260, 2280, and 22110 drives
  • Compatible with PCIe 3.0 motherboards, and backward compatible with PCIe 2.0 and PCIe 1.0
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In stock: US: 1974 | CA: 317

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Get ultra-fast data access by adding a PCIe M.2 SSD to your existing computer. This adapter lets you add a high-speed, 4-lane M.2 SSD (PCIe-based), such as a Samsung 950 Pro or Samsung SM 951, to a PC with an available x4 PCI Express expansion slot. You can mount the PCIe M.2 drive directly onto the adapter, giving you an easy and convenient way to improve your system performance and expand overall internal storage.

Boost your system speed and performance

The expansion card lets you take full advantage of the fast performance and compact size of PCIe M.2 internal solid-state drives. The adapter connects directly to your computer motherboard to support an M.2 PCIe-based SSD (NVMe or AHCI) through ultra-fast x4 PCIe. The adapter is compatible with PCIe 3.0 motherboards and is also backward compatible with PCIe 2.0 and PCIe 1.0. With the M.2 PCIe based drive in place, the adapter gives your computer a significant speed boost. 

Supports PCIe M.2 SSDs

The adapter supports PCIe 3.0 x4 NVMe (M Key) and PCIe-AHCI M.2 SSDs including 2242, 2260, 2280, and 22110 drives. The expansion slot adapter supports the most common drive sizes including 110 mm, 80 mm, 60 mm and 42 mm.

Easy to install

The expansion card is equipped with a full-profile bracket and includes a half-height/low-profile bracket, for installation in small form-factor computers.

The PEX4M2E1 is backed by a StarTech.com 2-year warranty and free lifetime technical support.


  • Connect a PCIe M.2 SSD to your computer through an available x4 PCI Express expansion slot to boost system speed and increase internal data storage
  • Get ultra-fast data access, ideal for gaming or high-performance workstations
  • Install your operating system on an M.2 PCIe based drive for fast access, while keeping larger platter drives available for bulk storage

Partner Numbers

  • Tech Data 12143905
  • A.B. Distributing, Inc. STAR-PEX4M2E1
  • ASI 183799
  • Ingram Micro USA 4E8646
  • D&H PEX4M2E1
  • UPC 065030865043


  • OS Independent logo
OS independent; No software or drivers required


Warranty Information Warranty 2 Years
Connector(s) 1 - Drive Connectors M.2 (PCIe, M-Key, AHCI/NVMe, NGFF)
1 - Host Connectors PCI Express x4
Environmental Operating Temperature 5°C to 50°C (41°F to 122°F)
Storage Temperature -25°C to 70°C (-13°F to 158°F)
Humidity 15% ~ 90% RH
Hardware Supported Drive Height(s) 2242
Interface PCI Express x4
Bus Type PCI Express
Number of Drives 1
Drive Size 22m - M.2 NGFF
Compatible Drive Types M.2 (PCIe, AHCI, M-Key, NGFF)
M.2 (PCIe, AHCI, M-Key, NGFF)
Drive Installation Fixed
Indicators 1 - LED Indicators Pin header on board for drive LED connection
Packaging Information Package Height 1,8 in [46,0 mm]
Package Length 6,3 in [15,9 cm]
Shipping (Package) Weight 5,3 oz [151,0 g]
Package Width 8,6 in [21,9 cm]
Performance Type and Rate PCI Express 3.0 (8 Gbps)
Hardware Raid Supported No
Hot Swap Capability No
Physical Characteristics Weight of Product 1,7 oz [47,0 g]
Color Red
Material Steel
Max Drive Height 4,3 in [110 mm]
Product Length 5,3 in [13,5 cm]
Product Width 3,1 in [8,0 cm]
Product Height 0,2 in [0,4 cm]
Software OS Compatibility OS independent; No software or drivers required
Special Notes / Requirements Note NVMe SSDs require drivers provided by the manufacture of the drive or may be natively provided by the OS (Windows®️ 8 and later - Mac OS 10.10.3 and later). Earlier OS versions do not have native NVMe support.
What's in the Box 1 - Included in Package x4 PCI Express® to M.2 PCIe SSD Adapter
low-profile bracket
full-profile bracket (pre-installed)
SSD standoff and installation screw
quick start guide


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Product Support

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

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Frequently Asked Questions

Before You Buy

There are no known incompatibilities between this hard drive adapter and any SSDs or motherboards; however, certain SSDs and motherboards may be incompatible with each other. Before you use an SSD and motherboard together, you should check with the SSD and motherboard manufacturers for any potential compatibility issues.

For example, the Intel 750 series SSD may not work as expected when you use it with certain motherboards. For more information, refer to the Intel documentation for the 750 series located here: www.intel.com/content/www/us/en/support/solid-state-drives/consumer-ssds/000005729.html.

You can use this hard drive adapter to boot an operating system from; however, depending on the SSD and motherboard that you are using, you may need to update the driver or BIOS in order for the hard drive to be seen when you initially boot the operating system.

If you experience issues when you use the hard drive adapter to boot an operating system, check with the manufacturers of the SSD and motherboard for updates.

You should also check to make sure that the SSD and motherboard are compatible. For more information, refer to the following FAQ: https://www.startech.com/faq/hard_drive_accessories_m2_u2_compatibility.


Although M.2 SSDs come in similar form factors, only an M.2 PCIe drive with an M.2 NGFF M key will operate with this device. M.2 drives that are SATA or drives that have a different key position are not compatible with this device.

This device can adapt an M.2 PCIe drive to connect to PCIe connections, which is not possible for a SATA based M.2 drive. The key type refers to the connector type on the M.2 PCIe drive, and the M key can only be M.2 PCIe. It is important to check the specifications of the drive to see if it supports PCIe M key.

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.

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