Technical Specifications

Mac and Linux Logos


Mac Compatibility

      Windows Compatibility

      • Windows computer with Thunderbolt 4 or Thunderbolt 3 ports
      • Windows 11, 10

      Supported Media

      • Sony SxS, SxS-1, SxS Pro, SxS Pro+, and SxS PRO X
      • Sony AXS media NOT supported


      SxS cards supported by Sony Media Utility


      Part Number

      • SF3-2SXSPX


      • 2-year

      Form Factor

      • Portable card reader

      Bus Interface

      • 40Gbps Thunderbolt

      External Connectors

      • Two SxS card slots
      • Two Thunderbolt ports
      • Power port

      Power Adapter

      • Universal 60W, 100-240V AC, 50–60 Hz

      Operating Temperatures

      • 0˚C to 35˚C (32˚F to 95˚F)

      Reader Dimensions WxDxH

      • 5.8 x 5.1 x 1 in. (145 x 130 x 25 mm)


      • Reader and Power Adapter: 1.85 lbs. (0.84 kg)
      • Complete Package: 2.65 lbs. (1.2 kg)


      • RoHS 3 Directive 2015/863
      • IEC62368-1 and IEC62368-2 Safety

      Package Contents

      • Sonnet SF3 Series - SxS PRO X Card Reader
      • Power adapter
      • Region-specific power cable for US, Australia, Europe, Japan, or Switzerland
      • 0.5-meter Thunderbolt 3 cable
      • ThunderLok 3 Thunderbolt connector retainer clip(5)
      • Documentation

      Support Links

      Support Knowledge Base

      Drivers, Documentation, FAQs

      Product Manual

      PDF Icon

      Mounting Instructions

      PDF Icon

      Technical Notes

      • Read speeds vary and are dependent on host devices, the OS version, or usage conditions.
      • While the SF3 Series - SxS PRO X Card Reader features a 40Gbps Thunderbolt 3 interface, some computers equipped with Thunderbolt 3 use an x2 PCIe lane implementation of Thunderbolt 3 technology that limits PCIe performance to 20Gbps.
      • Full performance requires the use of the included 40Gbps Thunderbolt 3 cable, other 40Gbps (not 20Gbps) Thunderbolt 3 cable, or any Thunderbolt 4 cable; look for the Thunderbolt icon and the number 3 or 4 on the connector housings to identify Thunderbolt cables.
      • Second Thunderbolt port supports USB 3.1 Gen 1 (5Gb) or Gen 2 (10Gb) devices when connected with proper cable or adapter (sold separately).
      • ThunderLok 3 compatible specifically with Sonnet 0.5- and 0.7-meter Thunderbolt 3 cables; Sonnet 1- and 2-meter Thunderbolt 3 cables require ThunderLok 3L.
      • For installation under macOS Catalina, Big Sur, or Monterey, user must authorize updated SxS driver in Security and Privacy System Preferences (unlock, then allow.)


      Thunderbolt 3 Cable (0.7-meter)

      Thunderbolt 3 Cable (0.7-meter)

      Part No. TCB-TB3-07M

      • 0.7-meter Thunderbolt 3 (40Gbps) cable
      • Delivers full 40Gb/s bandwidth
      • Supports 100W of Power Delivery (PD)
      • Compatible with Sonnet ThunderLok 3
      ThunderLok 3

      ThunderLok 3

      Part No. TB3-LOK2

      Secures Sonnet 0.5- or 0.7-meter Thunderbolt 3 (40Gbps) passive cables with ThunderLok 3-compatible products.

      Not compatible with Sonnet 1- or 2-meter Thunderbolt 3 (40Gbps) active cables.
      ThunderLok 3L

      ThunderLok 3L

      Part No. TB3-LOK2L

      Secures Sonnet 1- and 2-meter Thunderbolt 3 (40Gbps) active cables with ThunderLok 3L-compatible products.

      Not compatible with Sonnet 0.5- or 0.7-meter Thunderbolt 3 (40Gbps) passive cables.
      Power Adapter

      Power Adapter

      Part No. PWR-5A-12VA

      Spare power adapter (12V, 5A).

      SF3 Series - SxS Pro X Card Reader