• Overview
  • Tech Specs
CFast 2.0 Pro Card Reader with MacBook Pro (Thunderbolt 3)

Superior Performance

Thunderbolt LogoWith the increasing popularity of professional digital cinema cameras from Canon, ARRI and Blackmagic Design, the use of CFast 2.0 memory cards has soared, and the need for a truly high-speed card reader is undeniable. With current CFast 2.0 cards’ rated read speeds near 550 MB/s, it’s clear that USB readers don’t fill that need. Sonnet’s SF3™ Series - CFast™ 2.0 Pro Card Reader does. Featuring a 40Gbps Thunderbolt™ 3 interface, this device quickly ingests footage from CFast memory cards to any Mac or Windows(1) computer with Thunderbolt 3 ports—on location, in the studio, or in the edit suite—at the fastest speeds the cards will support.

Key Features

Superior Performance—Supports ingest of files from two CFast cards at maximum speed

40Gbps Thunderbolt 3 Interface—Connects to any Thunderbolt 3 computer port, or at the end of a Thunderbolt 3 device daisy chain

Dual CFast Slots—Enable simultaneous ingest of files from two cards up to 1000 MB/s aggregate

Bus-Powered—Powered through Thunderbolt connection; no power adapter required

Rugged Construction—Aluminum enclosure plus replaceable captive Thunderbolt 3 cable withstand heavy use

macOS and Windows Compatible



As the industry’s first CFast 2.0 card reader for Thunderbolt 3, the SF3 Series - CFast 2.0 Pro Card Reader employs its dual card slots to take advantage of the tremendous bandwidth offered by Thunderbolt 3. Capable of ingesting files simultaneously from two cards at concurrent data transfer speeds up to 1000+ MB/s—more than double the average ingest speed of USB 3.0 card readers—using the Sonnet reader makes for a significantly more convenient and efficient workflow.

Thunderbolt 3 Port Icon

Bus Powered by Thunderolt 3 Port
No Power Adapters Required


The SF3 Series - CFast 2.0 Pro Card Reader connects directly to your Mac or Windows computer’s Thunderbolt 3 port or at the end of a Thunderbolt 3 device chain. Requiring only a single cable to connect to your computer, this high-performance Sonnet reader is bus powered (no separate power supply required).

Thunderbolt 3 Computer Connected to SF3 Series - CFast 2.0 Pro Card Reader

Rugged Aluminum and Dimensions Icons

Compact and Rugged

Measuring a compact 5.75 inches wide by 1 inch high by 3.5 inches deep, the SF3 Series - CFast 2.0 Pro Card Reader is suitable for use in any workspace, even where space is tight. The reader’s shell is made from extruded aluminum, making it lightweight, and yet rugged enough to be transported in an equipment bag without fear of damaging the case.

Captive Thunderbolt 3 Cable

Replaceable Captive Cable

Through the use of a captive cable, the SF3 Series - CFast 2.0 Pro Card Reader’s Thunderbolt cable remains firmly connected to it at all times. Should the cable ever break, it can easily be replaced by Sonnet or a Sonnet-authorized service center.

SF3 Series - CFast 2.0 Pro Card Reader

 Computer hardware shown in photos for illustration purposes; items sold separately.
See Tech Specs Tab for footnotes
Part No.  
SF3-2CFST SF3 Series - CFast 2.0 Pro Card Reader
Warranty 1-year
Form Factor Portable card reader
Bus Interface 40Gbps Thunderbolt 3
External Connector CFast slots
Data Transfer Rate Up to 1000+ MB/s aggregate
Power Bus-powered via Thunderbolt 3 connection
Supported Media
  • CFast
  • CFast 2.0(2)
Dimensions (WxDxH) 5.75 x 3.5 x 1 in. (144.8 x 88.9 x 25.4 mm)
RoHS Compliant Yes
Package Contents
  • SF3 Series - CFast 2.0 ProCard Reader
  • Documentation


Specifications subject to change without notice.

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Mac Compatibility

Mac with Thunderbolt 3 ports

macOS® 10.12.6+

PC Compatibility

PC with Thunderbolt 3 ports(1)

Windows® 10

Technical Notes

  1. Windows computers require the latest firmware (BIOS) and Thunderbolt drivers to support this product. Check with your computer manufacturer for update information.
  2. Compatible with all major brands. Wyse brand CFast 2.0 cards are not compatible.

Mac OS LogoWindows Logo RoHS Compliant Logo


Produdt Overview - Featuring SF3 Series - CFast 2.0 Pro Card Reader (2:09 mins)

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