【Sonnet Technologies】M.2 2x4 Low-profile PCIe Card

  • Add up to 16TB of Ultra-fast M,.2 NVMe SSDs (Sold Separately)
  • Fits in Almost Any Card Space (Includes Full-height and Low-profile Brackets)
  • High-performance PCIe Interface –  PCI Express 3.0 x8 host bus interface plus connects four lanes of PCIe 3.0 bandwidth to each installed SSD
  • Superior Performance* – Achieve sustained single SSD speeds up to 3400 MB/s, RAID 0 speeds up to 6600 MB/s
  • macOS Boot Support
  • No Thermal Throttling
  • Optimized for Thunderbolt –  Use in Sonnet Thunderbolt expansion systems to connect two SSDs through one cable with performance up to 2800 MB/s
  • NVMe Compliant
  • Supports S.M.A.R.T. Operation
  • Mac, Windows, and Linux Compatible
  • Designed in the USA

Local Delivery

CHINAM is currently shipping within Hong Kong and specific countries only. We use local courier service as our delivery company. We do not support shipping items in a single order to multiple shipping addresses. To ship items to an additional address, please place a new order to us. Unless otherwise specified, delivery charge at the rate of HK$300 will be imposed on each delivery. We currently offer free delivery for each order over HK$1,000.

For remote areas or outlying islands delivery service, please contact our sales team via email - sales@chinam.com.hk

International Delivery

We will do our best to ship internationally to countries where we do not have sales representation. Please register with us, we’ll keep you updated and notify you when this is about to happen and become available in your region. Please note, at this time the customer is responsible for the duties and taxes imposed by their country.

For international shipping please contact our sales team via email - sales@chinam.com.hk

Deliver Time

  • Once your order has been handed over to the carrier for delivery, you will receive a shipment notification email with an estimated delivery date. Please note that it is not possible to expedite your delivery and receive your package earlier than the scheduled delivery date. Therefore, we are unable to accept requests for expedited delivery. Our carriers are unable to provide an exact time of day for your delivery. If you ordered multiple items, you may receive separate shipments.
  • All estimates are based on business days. We only make deliveries in the specified areas of Hong Kong from Monday to Sunday except on the first two days of the Lunar New Year and when typhoon warning signal No. 8 or above or black rainstorm warning is in force.
  • All rescheduling of delivery, additional purchases, new sales memos and amendments must be made 3 days before the scheduled delivery date. Otherwise, a double delivery charge will be incurred.
  • We may deliver the merchandise in one or more installments, and some of the merchandises may be delivered directly from suppliers. Any times and dates given for dispatch of merchandise, or the length of time that merchandise will take to be delivered, are only estimates. If we are unable to meet any stated dispatch or delivery dates or times we will inform you as to the progress of your order. You agree and accept that under no circumstances will we accept cancellation of order or refund.

Signature On Delivery

  • Most of our shipments contain valuable items. If you will not be in attendance to accept delivery of your purchase, consider shipping to someone you trust will be able to sign for your package. For your convenience, you may prefer to have your order delivered to your office address. If you choose this option, please include the name of your business in the address. Please note, if you choose this option, goods may be left with reception or the Mail Room.
  • As our carriers require a signature on delivery, the carrier will leave a calling card if you are not at home. Please contact the carrier to reschedule delivery.
  • For postal deliveries, no signature is required and order status tracking is not available.
  • Delivery failure due to no one answering the door upon the arrival of goods at the appointed time, or to circumstantial limitations such as the entrance being too small, will require a rescheduled delivery and therefore incur double delivery charges.
  • We will deliver the merchandise ordered by you to the address you give us for delivery at the time you make your order through our staff or a third party provider. You agree to present your photo identification upon request when you acknowledge receipt of the merchandise. The merchandise shall be, and shall be deemed to be, delivered and accepted by you when the merchandise are delivered to the address you give us for delivery. You agree and accept that we are entitled, at our option, to charge you additional costs or cancel your order in the event of your failure to accept delivery for whatever reasons.


  • You will become the owner of the merchandise you have ordered when they have been delivered to you. Once merchandise has been delivered to you they will be held at your own risk and we will not be liable for the loss or damage.
  • You may not export any products purchased at CHINAM online store. We sells and ships products to end-user customers only. Notwithstanding order confirmation, CHINAM may cancel any order where it has reasonable grounds to believe the product is not being purchased for end use.
  • If there is any inconsistency or ambiguity between the English version and the Chinese version, the English version shall prevail.
  • We reserve the final right to terminate or alter the above terms and conditions. In the event of any dispute, our decision shall be final and conclusive.
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Add up to 16TB of SSD Storage! Super High-speed Data Transfers

If you need to add internal storage to your computer and ultra-high-speed data transfers are critical to your work, you need NVMe SSD storage. While a single M.2 NVMe PCIe SSD offers tremendous performance — 10x more than that of a spinning drive — Sonnet’s M.2 2x4 Low-profile PCIe Card enables you to mount two of them into a single x8 card slot and combine their performance. No matter how you use it, this card can transform the way you work or play.

RAID 0 Performance

Install the M.2 2x4 Low-profile PCIe Card with your SSDs into your computer with PCIe 3.0 or 4.0 card slots, and then configure them as a RAID 0 set to obtain data transfers up to 6600 MB/s.

Easy Fit – Install in an x8 PCIe Card Slot

Sonnet’s M.2 2x4 Low-profile PCIe Card fits in almost any card space with an available x8 PCIe card slot, whether in a desktop tower, mini workstation, or server computer; or even in a Sonnet Thunderbolt expansion system. Included full-height and low-profile brackets enable a secure fit wherever you install it.

Silent and Cool Running – No Slowdowns. No Thermal Throttling. Full Performance.

SSDs heat up significantly while performing very large file transfers and will protect themselves from overheating by “thermal throttling” — a feature that drastically cuts SSDs’ performance until they cool off to a safe level. The Sonnet M.2 2x4 Low-profile PCIe Card’s silent SSD cooling solution works to keep SSDs always cool enough to eliminate the need for thermal throttling and enables your SSDs to always maintain their highest potential performance.

SSD IdeasmacOS Boot Supporter. Applications’ Scratch Disk. Time Machine Backup.

Mac users can install macOS® on one SSD to create a fast boot volume, and then use the other installed SSD for file storage; as a super-fast plug-in, media storage, or scratch disk; or even for use as a Time Machine® backup volume.

Thunderbolt Port? – Connect Two SSDs Through One Cable

Got a Thunderbolt connection, but no PCIe card slot? Sonnet’s M.2 2x4 Low-profile PCIe Card is ideal for use in any one of Sonnet’s Thunderbolt expansion systems. The combo enables you to add one or two SSDs to any Mac (M1, M2, M1 Pro, M1 Max, M1 Ultra, Intel®), Windows, or Linux computer with Thunderbolt ports.

Simple and S.M.A.R.T. – Easy System Integration

Integrating a Sonnet M.2 2x4 Low-profile PCIe Card into your system is easy — NVMe compliance ensures the necessary drivers are installed automatically. The M.2 2x4 uses the operating systems’ built-in drive formatting utilities to format the SSDs. SSD health monitoring is supported through S.M.A.R.T. (Self-Monitoring, Analysis and Reporting Technology) data reporting, too.

Do You Need Something More? More SSDs? More Connectivity?

Do you need to install more than two M.2 NVMe SSDs? Check out Sonnet’s M.2 4x4 PCIe  Card with double the capacity and double the potential performance of the M.2 2x4 card. Or do you need more connectivity in addition to dual SSD support? Look at the McFiver™ PCIe Card; it offers the same performance of the M.2 2x4 card plus two 10Gbps USB-C® ports and a 10Gb Ethernet port.

Sonnet Technologies Sonnet M.2 2x4 Low-profile PCIe Card Specifications

Mac Compatibility
Mac Pro 7,1 (2019)
Mac Pro 5,1 (Mid 2010 & Mid 2012)
macOS 10.13.6+
macOS Ventura compatible
Windows Compatibility
Windows computer with available x8 PCIe slot (PCIe bifurcation not required)
Windows 11 and 10
Linux Compatibility
Linux computer with available x8 PCIe slot (PCIe bifurcation not required)
Linux Kernel 5.0+
Thunderbolt PCIe Expansion System Compatibility - Mac (M1, M2, M1 Pro, M1 Max, M1 Ultra, and Intel®) with Thunderbolt ports via a Thunderbolt to PCIe card expansion system with available x8 PCIe card slot
- Windows 10 computer with Thunderbolt 4 or Thunderbolt 3 ports via a Thunderbolt to PCIe card expansion system with available x8 PCIe card slot
- Windows 11 will support this card in a Thunderbolt Expansion System beginning with 23H1 future release
- Linux computer with Thunderbolt 4 or Thunderbolt 3 ports via a Thunderbolt to PCIe card expansion system with available x8 PCIe card slot
M.2 NVMe SSDs Compatibility For a list of compatible M.2 NVMe SSDs, see the following PDF


Form Factor
Low-profile PCIe computer card
Length 7.25 in. (185mm)
PCIe 3.0 Bridge Chip PLX PEX 8724
Internal Connectors Two M-keyed (NVMe) M.2 sockets
SSDs Supported M.2 2280 NVMe PCIe SSDs
M.2 NVMe SSDs Compatiblity PDF
Boot Suppport macOS
- Only from a single SSD (not RAIDed)
- Mac Pro 5,1 or Mac Pro 7,1
- Any Thunderbolt Mac
Windows, Linux
- No
RAID Support macOS, Windows, Linux
RAID 0 or RAID 1
NVME Support Yes
S.M.A.R.T. Status Data Reporting Support Yes
RoHS Compliant Yes
  • Sonnet M.2 2x4 Low-profile PCIe card
  • Two mounting brackets (full-height and low-profile)
  • Thermal transfer pads
  • 2-years Limited Manufacturer's Warranty


Sonnet M.2 2x4 PCIe Card Quick Start Guide

【Sonnet Technologies】M.2 2x4 Low-profile PCIe Card