Sonnet SF3 CFast 2.0 Pro Card Reader – Dual-Slot Thunderbolt 3

The Sonnet SF3 Series – CFast 2.0 Pro Card Reader is built for today’s high-resolution cinema production workflows. Whether you're shooting with ARRI, Canon, or Blackmagic Design cameras, this reader ensures you’re never waiting on media transfers.

With dual CFast 2.0 slots and a 40Gbps Thunderbolt 3 interface, you can ingest footage at over 1000 MB/s aggregate speed — all without needing an external power supply. It’s compact, rugged, and efficient, making it perfect for on-location shoots, studios, or editing bays.

Unlike slower USB readers, the SF3 CFast 2.0 Reader unleashes the full speed of your media cards. And it’s bus-powered, so there’s no extra gear or wall plug required. Just plug it into your Thunderbolt 3 port and go.

Whether you're working on macOS or Windows, this reader was built to keep up with your production.

Key Features:
40Gbps Thunderbolt 3 interface
Dual CFast 2.0 card slots
Supports simultaneous ingest up to 1000+ MB/s
Bus powered – no external power adapter needed
Rugged aluminum enclosure
Captive 0.5-meter Thunderbolt cable (replaceable)
Compatible with macOS and Windows
2-year product warranty
Free lifetime customer technical support
Designed in the USA

What’s in the Box:
SF3 Series – CFast 2.0 Pro Card Reader (with captive 0.5-meter Thunderbolt cable)
Documentation

Specifications

• Part Number: SF3-2CFST
• Warranty: 2-year
• Form Factor: Portable card reader
• Bus Interface: 40Gbps Thunderbolt
• External Connectors: Two CFast slots
• Operating Temperatures: 0˚C to 35˚F (32˚F to 95˚F)
• Dimensions (WxDxH): 5.8 x 3.5 x 1 in. (145 x 89 x 25 mm)
• Weight: Reader: 0.35 lbs (0.16 kg); Complete Package: 0.60 lbs (0.27 kg)
• Compliance: RoHS 3, IEC62368-1 and IEC62368-2 Safety
• Product Manual: PDF
• Mounting Instructions: PDF
• Technical Notes: 1. Compatible with all major brands. Wyse brand CFast 2.0 cards are not compatible.
  2. Read speeds vary and are dependent on host devices, the OS version, or usage conditions.

Compatibility

• Mac: M series and Intel with Thunderbolt 3 ports

• macOS: macOS 13+, macOS Sequoia compatible

• Windows: Computers with Thunderbolt 5 or 4 ports; Windows 11

• Supported Media: CFast, CFast 2.0 (1)(2) (except Wyse brand cards)

Technical Notes: 

1. Compatible with all major brands. Wyse brand CFast 2.0 cards are not compatible.
2. Read speeds vary and are dependent on host devices, the OS version, or usage conditions.

Product videos