SF3 Series - CFexpress Pro Card Reader with photographer reviewing photos in the background.
Double Your CFexpress Workflow
SF3 Series - CFexpress Pro Card Reader
Professional Thunderbolt Dual-Slot Reader for Fast, Simultaneous CFexpress 2.0 Type B Media Ingest
for Mac, Windows, and iPad Pro

Superior Ingest Performance

Whether you’re capturing 4K at 60P RAW video footage or shooting hundreds of photos in a session and saving to CFexpress memory cards, the generated files are huge, and the cards fill up fast. Moving those files to your computer for editing is a must, but if you use the wrong tool, you’ll spend a lot of time waiting around. Get a Sonnet SF3™ Series - CFexpress Pro Card Reader; it’s the ultimate tool for finishing the job fast.

Group of video cameras.

Ingest Two Cards at Once. Cut Wait Times in Half.

Dual Card Slots, Less Waiting

Sonnet’s CFexpress media card reader is ultra-fast, able to ingest files from CFexpress cards at their maximum speeds. Better still, it can ingest files simultaneously from two CFexpress cards — at more than double the average ingest speed of other CFexpress or XQD card readers — to cut your ingest times in half.

CFexpress card simultaneous ingest at 2600 MB/s chart.
Two CFexpress Pro Card Readers installed in mobile rack kit.

Ready for Racking

Sonnet’s SF3 Series Professional Card Readers include threaded mount points that enable you to securely attach two readers side-by-side on a rack tray in just 1U of rack space.

“The Sonnet SF3 Series CFexpress Pro Card Reader is one of the few on the market today that will allow you to use your CFexpress card to its full performance capabilities.  Its build is beyond reproach with a smooth brushed aluminum exterior with ribbing that acts as a heatsink, two ports in the front that will accommodate CFexpress Type B, as well as two Type-C [Thunderbolt 3] ports at the back to allow for daisy chaining as Thunderbolt 3 does.”
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– The SSD Review
Illustration of front view of CFexpress Pro Card Reader with dimensions.Illustration of rear view of CFexpress Pro Card Reader with dimensions.

CFexpress Reader for Digital Imaging Technicinals

Measuring 5.75 inches wide by 1 inch tall by 3.5 inches deep, Sonnet’s CFexpress/XQD media card reader is suitable for use in any workspace and workflow; for DITs working multi-camera shoots or in a small space, the Sonnet reader’s design advantages stand out.

Key Features

Performance icon.

Superior Ingest Performance

Ingests footage from CFexpress 2.0 Type B cards at up to maximum supported speeds.

Ingest times icon.

Cuts Ingest Times by up to Half

Dual card slots enable simultaneous ingest of footage from two cards for greater efficiency.

Thunderbolt icon.

Maximum Thunderbolt Performance

Pro media card reader provides four lanes of PCIe bandwidth for maximum performance.

Rugged icon.

Compact, Rugged, Stackable

Small and rugged aluminum enclosure for reliable operation; design enables multiple SF3 Series card readers to occupy same footprint.

Rackable icon.

Rackable

Threaded mount points enable secure attachment of two readers side-by-side on a rack tray in just 1U of rack space.

Thunderbolt ports icon.

Connect Additional SF3 Series Pro Card Readers

One port connects to computer; second port supports daisy chaining additional card readers.

Computer compatibility icon.

Computer Compatibility

Compatible with Mac and Windows. See Tech Specs for details.

iPad Pro compatibility icon.

iPad Pro Compatibility

Compatible with iPad Pro (M series). See Tech Specs for details.

Free lifetime tech support icon.

Sonnet Support

Founded in 1986 in Orange County, Southern California — long recognized as a vibrant hub of technology and engineering — Sonnet has been at the forefront of innovation for nearly four decades. We’ve introduced award-winning products that expand performance and connectivity for Mac, Windows, and other industry-standard computers. Many of our team members have been with us for more than 20 years, bringing unmatched expertise across both current and legacy products. Should you ever need technical support, you can count on our knowledgeable staff to provide the help you need.

Sonnet SF3 Series Pro Card Readers

Designed to be Stacked and Daisy Chained

SF3 Series Professional Card Readers feature rugged aluminum enclosures designed to be stacked and daisy chained, enabling multiple AJA PAK Media, CFast 2.0, CFexpress, RED MINI-MAG, and SxS PRO X readers to occupy the same footprint, while connecting to your computer through a single cable. You can take advantage of Thunderbolt’s up to 2800 MB/s of PCIe 3.0 x4 bandwidth to ingest four, six, or more cards simultaneously!
SF3 Series Pro Card Readers Stacked

Thunderbolt Technology

Fastest External Interface Available

Sonnet Thunderbolt products feature a high-speed Thunderbolt interface that delivers PCIe bandwidth needed to support data transfers at full speed.

Two Thunderbolt ports icon.
Connect Additional Thunderbolt Devices
One port is reserved for connecting to your computer; the second port enables connection of additional Thunderbolt peripheral devices in a daisy chain.
10Gbps USB 3.2 Gen 2 icon.
10 Gbps USB 3.2 Gen 2 Support
10 Gbps USB 3.2 Gen 2 support allows you to connect a USB device to the second Thunderbolt port using the proper cable or adapter.
15W power icon.
Provides 15W of Power
For peripherals requiring extra power, 15 watts is provided to bus-powered devices through the secondary Thunderbolt port.
Display icon.
Supports Connecting Up to One 8K Display
Maximize the utilization of one computer Thunderbolt port, connecting the largest display supported by your computer.
Thunderbolt cable with ThunderLok connected to Thunderbolt port on rear of CFexpress Pro Card Reader.
Sonnet Thunderbolt cable and ThunderLok icon.
Secure Connections for High Performance

Thunderbolt Cable and ThunderLok Included

Sonnet includes a Thunderbolt cable that supports Thunderbolt’s maximum bandwidth and is fully compatible with Thunderbolt 5, 4, and 3 computers. Sonnet also provides ThunderLok, a Thunderbolt connector cable lock, that prevents accidental cable disconnections.
Sonnet Thunderbolt cable with ThunderLok sitting beside it.
Thunderbolt port with threaded hole icon.

ThunderLok Advantage

Many Sonnet Thunderbolt products featuring Thunderbolt ports come equipped with threaded mounting holes to securely attach a Sonnet ThunderLok connector lock, preventing Thunderbolt cables from accidentally disconnecting.

Group of computers that feature Thunderbolt ports.

Built for the Fast Lane

Designed for the Fastest Connection to Thunderbolt Computers

SF3 Series Professional Media Card Readers are purposely designed with a Thunderbolt 3 controller and its four lanes of PCIe (not available in a Thunderbolt 4 peripheral) to achieve maximum simultaneous ingest speeds. Watch this video to learn more about the performance benefits.

SF3 Series - CFexpress Pro Card Reader