Sonnet SXS PRO X Thunderbolt 3 Single-Slot Card Reader

Available to order

Please contact us for a current delivery time estimate

Product type:
Card Readers

Compact Professional SxS PRO X Card Reader for Computers with Thunderbolt 3 & 4 or USB4 Ports



Co-developed by Sony®, SxS™ professional memory cards are the onboard recording media used in many past and current Sony and ARRI pro digital video cameras and camcorders. The latest generation cards—SxS PRO X—offer a nearly 3x increase in maximum read speeds of the previous generation. If you use SxS media in your workflow, you should use an SxS card reader capable of supporting SxS PRO X and every other SxS memory card at maximum speed. For the fastest ingests, get a Sonnet SxS PRO X Thunderbolt™ 3 Single-Slot Card Reader; it’s the best tool for the job.



The SxS PRO X Thunderbolt 3 Single-Slot Card Reader is small, ultra-fast, and easily reads all SxS memory cards at their rated speeds(1).



When you need to travel light and don’t have a large stack of cards to ingest, extra power bricks and cables take up extra space and can weigh you down. Sonnet’s SxS PRO X Thunderbolt 3 Single-Slot Card Reader is bus-powered, operating off its Thunderbolt connection so there’s no need to plug in a power supply or power cable.



The SxS PRO X Card Reader supports all generations of SxS media up to the latest PRO X cards. Additionally, this reader(2) supports XQD cards with the Sony ExpressCard Adapter for XQD Memory Card (QDA-EX1) or SD cards with Sonnet's SDHC Adapter for SxS Slot (SD-SXS-E34).



Equipment size and design features matter. Sonnet’s SxS PRO X Thunderbolt 3 Single-Slot Card Reader measures just 2.8 inches wide by 4.1 inches deep by 0.8 inches tall (about the size of a deck of playing cards), making it suitable for use in any workspace and workflow. Featuring a rugged aluminium enclosure, the Sonnet reader packs easily into a computer bag or backpack. Its single-port Thunderbolt interface and bus-powered operation make it perfect for use at the end of a daisy chain (such as multiple Sonnet SF3™ Series dual-slot pro card readers).



Featuring a 40Gbps Thunderbolt™ 3 interface, this reader ingests footage from all SxS memory cards to any Mac® or Windows® computer with Thunderbolt 3 ports—on location, in the studio, or in the edit suite—at the fastest speeds the cards will support.



Sonnet includes a 0.5-meter Thunderbolt 3 (40Gbps) cable that supports Thunderbolt 3’s full bandwidth. 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.

  • Compact Professional SxS PRO X Card Reader for Computers with Thunderbolt 3 & 4 or USB4 Ports
  • Superior Ingest Performance
    Ingests footage from any SxS card at maximum supported speeds; up to 1250 MB/s with SxS PRO X, and up to 440 MB/s for SxS Pro+ media(1).
  • Bus-powered
    Ideal for use with a laptop computer when no power outlet is available.
  • Broad Card Support
    Supports all SxS media, including SxS PRO X and SxS PRO+ E Series cards. XQD™ and SD™ cards are supported when used with adapters(2).
  • Pocket-Sized and Rugged
    Small and rugged aluminium enclosure for easy packability and reliable operation.
  • 40Gbps Thunderbolt 3 Peripheral
    This Thunderbolt 3 card reader provides 2 lanes of PCIe 3 to the SxS PRO X card slot. (Thunderbolt 4 devices are limited to one lane of PCIe.)
  • Mac & Windows Compatible
    Supports Mac and Windows computers

Technical Notes

  1. Read speeds vary and are dependent on host devices, the OS version, or usage conditions.
  2. XQD and SD card adapters sold separately.
  3. ThunderLok3 compatible specifically with Sonnet 0.5- and 0.7-meter Thunderbolt 3 cables; Sonnet 2-meter Thunderbolt 3 cables require ThunderLok 3L.
  4. For installation under macOS Catalina or Big Sur, you must authorize the updated SxS driver in Security and Privacy System Preferences (unlock, then allow).
  5. Windows computers require the latest firmware (BIOS) and Thunderbolt drivers to support this product. Check with your computer manufacturer for update information.


  • Card Type: SxS
  • Dimensions: 72 x 105 x 19.5 mm / 2.8 x 4.1 x 0.8 in
  • Interface: Thunderbolt 3
  • Read Speed: Up to 1250 MB/s with SxS PRO X, Up to 440 MB/s for SxS Pro+ media(1)

Shipping policy

Any items which are in stock, will be dispatched immediately - same day if possible and morning of the following business day at the latest. Items which are not in stock at our local warehouse will be routed to us, and dispatched immediately upon arrival to us. In that case, the estimated dispatch time is noted on the product page.

Note that you are always welcome to email or call (+372) 5556 0057 for a more accurate shipping time estimate, as this does vary depending on a number of factors.

Standard shipping

Unless otherwise noted, all items are shipped standard via DPD. We normally ship to European Union countries only – do contact us for possible exceptions, particularly other European mainland countries. Shipping times vary between 1 to 10 business days within Europe – an up to date estimate will be given at checkout.

Express shipping

Our shipping partner for expedited deliveries is DHL Express; please contact us directly for a quote.

Returning an item

If you are not completely satisfied with your purchase, you can return your item(s) for a full refund within 14 days of confirmed delivery.

Special sales, demo items and promotions may have modified return policies. If an item from a bundle is returned for refund, the total bundle discount or the total value of the gifts will get deducted from the returned item prior to issuing a refund. If the bundle discount (or gift value) exceeds the value of the returned item, the difference must be paid to be able to return the item.

Return autorization

If you would like to return any item(s), please contact us by either emailing or calling (+372) 5556 0057. We will share with you a Return Merchandise Authorization (RMA) code and ask that you clearly mark this code outside of your shipping box as you ship your item(s) back for a refund.

You will be liable for the shipping and any applicable customs/duty fees returning the item(s).

Incorrect items

If the return is made due to a faulty product, or an incorrectly shipped product, or if you are returning the item(s) due to a defect, or functionality issue, or because it is not the item you have ordered, we will gladly email or mail a return shipping label covering all shipping related expenses. In order to determine whether the return is initiated due to a technical problem, we may ask for you to provide visual support like images or a video on the item(s).


Returned merchandise must be in its original packaging, and placed in a decent shipping box, e.g. the same box that we shipped the items to you in. Please make sure to clearly mark the RMA code you have received from us outside on the box.

Do not forget to cover or peel off any existing shipping labels on the box.

DIT Supplies OÜ cannot be held accountable for return shipments that have not reached us or returns made without RMA codes. We strongly advise that if you are returning the item(s) with a carrier of your choice that you use a traceable shipping method.

It may take 4-5 business days for your return to reach us. Once it is received and inspected, your refund will be processed and automatically applied to your credit card or original method of payment within 14 business days. Please note that depending on your credit card company, it may take an additional 2-4 business days after your credit is applied for it to post to your account.

Customs, duties & taxes

There are no customs duties or taxes on orders shipping within the EU. Orders shipped outside of the EU may be subject to import taxes, customs duties and fees collected by the destination country. The recipient of an international shipment may be subject to such import taxes, customs duties and fees, which are collected once a shipment reaches the recipient's country. Additional charges for customs clearance must be paid for by the recipient; we have no control over these charges and cannot predict what they may be. Customs policies vary widely from country to country; and when customs clearance procedures are required, it can cause delays beyond our original delivery estimates. We advise that you contact your local customs office for more information.