SF3 Series - RED MINI MAG Pro Card Reader - Superior Performance. Dual-slot Convenience.
Superior Performance.
Dual-slot Convenience.
Superior Performance. Dual-slot Convenience.
SF3 Series - RED MINI-MAG Pro Card Reader
Professional Dual-Slot RED MINI-MAG Reader for Computers with Thunderbolt 4 or Thunderbolt 3 Ports
Mac | Windows | Linux
RED Camera
Supports RED MINI-MAG Cards at Maximum Speed

Superior Dual-Slot Ingest Performance

When you shoot on RED, chances are your video footage is captured to RED MINI-MAG® media, known for their quality and durability. With the move to shooting demanding 8K and at high frame rates, those cards fill up faster than ever—the need for a tool that accelerates offloading footage from multiple cards is greater than ever, too. The Sonnet SF3™ Series - RED MINI-MAG Pro Card Reader is the ultimate tool for the job.

Featuring a dual-port, 40Gbps Thunderbolt™ interface, this RED APPROVED reader ingests footage from RED MINI-MAG memory cards to any computer with Thunderbolt 4 or Thunderbolt 3 ports at the fastest speeds the cards will support.
SF3 Series - RED MINI-MAG Pro Card Reader Hero
Video Editor Ingesting RED MEDIA
Ingest Six Cards Simultaneously

In the Same Time as Just One Card in a USB Reader

The ability to ingest multiple cards simultaneously at full speed(1) means you can complete the process—without swapping cards—in as little as one sixth the time required using a single-slot reader!
SF3 Series - RED MINI-MAG Pro Card Reader Performance Chart

Key Features

Performance Icon

Superior Ingest Performance

Ingests footage from RED MINI-MAG cards at up to maximum supported speeds. Simultaneously ingest from two cards at full speed(1).

RED Media Icon

Dual Card Slots

Enable simultaneous ingest of files from two cards up to 1060 MB/s aggregate(1).

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 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 pro 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 & Linux Compatible

Supports Mac, Windows, and Linux 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 ›
RED MINI-MAG Media Cards
Dual Card Slots, Less Waiting

Ingest from Two Cards at up to 1060/MBs

The SF3 Series - RED MINI-MAG Pro Card Reader can ingest files simultaneously from two cards at up to 1060 MB/s(1)—more than double the average ingest speed of other RED MINI-MAG card readers—to cut your ingest times in half.
SF3 Series - RED MINI-MAG Pro Card Reader In Rack Kit
RED Ready. Rack Ready.

The Perfect Mobile RED Ingest Station

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.
On Location Setting
Designed for Digital Imaging Technicians

Portable, Rugged, Stackable

Measuring 5.8 inches wide by 1.4 inches high by 6.1 inches deep, the SF3 Series - RED MINI-MAG Pro Card Reader is suitable for use in any workflow and workspace; for DITs working multi-camera shoots or in a small space, the Sonnet reader’s design advantages stand out.
SF3 Series - RED MINI-MAG Pro 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!

40Gbps Thunderbolt

Fastest External Interface Available

Featuring a dual-port 40Gbps Thunderbolt interface, this reader ingests footage from all CFast memory cards to Mac and Windows computers with Thunderbolt  or Thunderbolt ports—on location, in the studio, or in the edit suite—at up to the fastest speeds the cards will support.

Thunderbolt 40Gbps Ports 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(2) 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(3) 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.

Apple M1 Logo

also compatible with M1 Macs

see tech specs for details

Older Macs with Thunderbolt 2 Ports

Backward Compatible with Older Macs

No Thunderbolt 4 or 3? No problem—the SF3 Series - RED MINI-MAG Pro 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).

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 - RED MINI-MAG Pro Card Reader