SF3 Series - SxS PRO X Card Reader - Next Generation Pro Ingest
Next Generation Pro Ingest
Next Generation Ingest
SF3 Series - SxS PRO X Card Reader
Professional Dual-Slot SxS PRO X Card Reader for Computers with Thunderbolt 4 or Thunderbolt 3 Ports
Mac | Windows
Concert Camera Operator
Supports SxS PRO X Cards at Full Speed

Superior Dual-Slot Ingest Performance

SxS™ professional memory cards are used in many past and current Sony® and ARRI® pro digital video cameras and camcorders. Sony’s latest cards—SxS PRO X—take a performance leap by offering nearly 3x the maximum read speeds over previous generation cards. While Sony Venice Cinema Camera and PXW-Z750 XDCAM exploit SxS PRO X cards’ enhanced performance capabilities, even users of compatible Sony video cameras, such as PXW-X400 and PXW-Z450, can take advantage of the cards’ read speed potential.
Sony PXW-Z750 and ARRI Alexa SXT W Video Cameras
When it’s time to ingest footage to your computer, don’t settle on any old card reader—for the shortest ingest times, SxS PRO X cards require a card reader designed to support their maximum ingest speeds (and, for even greater efficiency, a dual-slot card reader that can ingest two cards simultaneously). Get a Sonnet SF3™ Series – SxS PRO X Card Reader; it’s the fastest tool for the job.
SF3 Series - SxS PRO X Card Reader Side View
SF3 Series - SxS PRO X Card Reader On Desk
Built for Two – Read up to 2500 MB/s

Dual-Slot Ingest at Maximum Read Speeds

The SF3 Series - SxS PRO X Card Reader easily reads all SxS memory cards at their rated speeds, with simultaneous aggregate performance of two cards up to 2500 MB/s(1).
SF3 Series - SxS PRO X Card Reader Speed Chart

Key Features

Performance Icon

Superior Ingest Performance

Ingests footage from all SxS cards at up to maximum supported speeds. Simultaneously ingest from two cards at full speed(1).

SxS Media Icon

Broad SxS Card Support

Supports all SxS media, including SxS PRO X, SxS PRO+ E Series, and SxS-1 cards.

PCIe 3.0 x4 Icon

PCIe 3.0 x4 Thunderbolt 3 Device

Thunderbolt 3 provides four lanes of PCIe 3.0 (two lanes to each SxS PRO X card slot). A Thunderbolt 4 device would be limited to one lane total. Learn more about Thunderbolt 3 performance benefits over Thunderbolt 4.

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


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

Thunderbolt 3 Ports Icon

Two Thunderbolt Ports

One port connects to computer; second port supports daisy chaining of up to five additional SF3 Series pro card readers.

Thunderbolt 4 Port Icon

Forward Compatible

Sonnet's pro card readers are fully compatible with Thunderbolt 4 computers, and are purposely designed with Thunderbolt 3 (which has four lanes of PCIe 3.0 available).

Thunderbolt 2 Port Icon

Backward Compatible

Compatible with Thunderbolt 2 and Thunderbolt 1 Macs when used with an Apple® Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter and a Thunderbolt 2 cable (both sold separately).

Mac & Windows Icon

Mac & Windows Compatible

Supports Mac and Windows computers.

Free Lifetime Tech Support
Why Thunderbolt 3 Instead of Thunderbolt 4?
Sonnet's line of pro card readers rely on Thunderbolt 3 technology for maximum performance. Learn Why ›
Sony SxS Pro X, SxS Pro, and SxS-1 Media Cards
Supports all SxS Media

Broad SxS Card Support

Supports all SxS media, including SxS PRO X, SxS PRO+ E Series, and SxS-1 cards.
Film Crew on Movie SetSF3 Series - SxS PRO X Card Reader Front View
Ingest Simultaneously from Two Cards

Dual Card Slots, Double Productivity

The SF3 Series – SxS PRO X Card Reader ingests files from all SxS memory cards at their rated speeds(1). Better still, it can ingest files simultaneously from two cards—at double the average ingest speed of other SxS card readers—to cut your ingest times in half.
SF3 Series - SxS PRO X Card Reader In Rack Kit
Rack It Up

Ready for Racking

Sonnet’s SF3 Series pro 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.
DIT Camera Operator On Location
Compact, Rugged, Stackable

The SxS Card Reader for Digital Imaging Technicians (DITs)

For DITs working multi-camera shoots or in a small space, equipment size and design features matter. The SF3 Series – SxS PRO X Card Reader measures just 5.8 inches wide by 5.1 inches deep by 1 inch tall, making it suitable for use in any workspace and workflow.
SF3 Series - SxS PRO X Card Reader Dimensions
SF3 Series Pro Media Card Readers Stacked
Sonnet SF3 Series Pro Card Readers

Designed to be Stacked and Daisy Chained

SF3 Series pro card readers feature rugged aluminum enclosures designed to be stacked and daisy chained, enabling multiple CFast™ 2.0, CFexpress™/XQD™, RED MINI-MAG®, SxS™ Pro, 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 2750 MB/s of PCIe 3.0 x4 bandwidth to ingest four, six, or more cards simultaneously!
SF3 Series - SxS PRO X Card Reader Thunderbolt 3 Ports
40Gbps Thunderbolt

Fastest External Interface Available

Featuring a dual-port 40Gbps Thunderbolt interface(2)(3), this reader ingests footage from all SxS memory cards to Mac® and Windows® computers with Thunderbolt 4 or Thunderbolt 3 ports—on location, in the studio, or in the edit suite—at up to the fastest speeds the cards will support.
Thunderbolt 3 Port Icons
Dual 40Gbps Thunderbolt Ports
One port is reserved for the connection to your Thunderbolt 4 or Thunderbolt 3 computer; the second port enables expansion of up to five additional Thunderbolt peripheral devices in a daisy chain.
10Gbps USB 3.1 Gen 2 Icon
10Gbps USB 3.2 Gen 2 Support
10Gbps USB 3.2 Gen 2 support allows you to connect a USB device(4) to the second 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.
4K & 5K Display Icon
Supports Connecting One 5K 60Hz Display
Maximize the utilization of one computer Thunderbolt port.
Thunderbolt Ports
All the Right Connections

40Gbps Thunderbolt Cable and ThunderLok 3 Included

Sonnet includes a 0.5-meter Thunderbolt 3 cable that supports Thunderbolt's full 40Gbps bandwidth, and is fully compatible with Thunderbolt 4 computers. Sonnet also provides a ThunderLok™ 3 Thunderbolt connector retainer clip(5) that prevents accidental cable disconnections—just slide it over one end of the cable, and then plug in the connector and secure it to the reader by turning a thumbscrew. Because of its unique design, ThunderLok remains on the cable so it won’t get lost when not in use.
40Gbps Thunderbolt Cable with ThunderLok 3Supports Full 2750 MB/s PCIe Bandwidth Icon
Thunderbolt 4 Computers

Forward Compatible with Thunderbolt 4 Computers

SF3 Series professional media readers are fully compatible with Thunderbolt 4 computers. Sonnet’s media 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. Learn more about the performance benefits of Thunderbolt 3 over Thunderbolt 4.
Older Macs with Thunderbolt 2 Ports

Backward Compatible with Older Macs

No Thunderbolt 3 or 4? No problem—the SF3 Series - SxS PRO X Card Reader is also compatible with Macs with Thunderbolt 2 or Thunderbolt ports when used with the bi-directional Apple Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter and a Thunderbolt cable (both sold separately).
SxS Pro X Single Slot Card Reader

Bus-Powered Option Available

Do you need the fastest ingest speeds but need to travel light—extra power bricks and cables take up extra space and can weigh you down—and don’t have a large stack of cards to ingest? Check out Sonnet’s SxS PRO X Thunderbolt 3 Single-Slot Card Reader. It’s bus-powered, operating off its Thunderbolt connection so there’s no need to plug in a power supply or power cable, and reads SxS PRO X cards at rated speeds.
Learn why Sonnet's Pro Products Rely on Thunderbolt 3 Technology for Maximum Performance
See Tech Specs for footnotes.
Product specifications and information subject to change without notice. Computer hardware and accessories featured in photos that are not included with product are shown for illustration purposes; items sold separately.

SF3 Series - SxS Pro X Card Reader