SanDisk SDXC Extreme Pro 128GB Stromboli Reader — main product image

SanDisk SDXC Extreme Pro 128GB Stromboli Reader

SanDisk

SanDisk SDXC Extreme Pro 128GB Stromboli Reader

Name: SanDisk SDXC Extreme Pro 128GB Stromboli Reader
Brand: SanDisk
SKU: SDXC Extreme Pro

★★★★★4.4 (16 reviews)

4KUHD

Fast 128GB SDXC card bundled with a USB 3.0 reader — ready for 4K video and rapid file transfers.

$35.39*

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*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.

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Overview

The SanDisk 128GB SDXC Extreme Pro is built for demanding photo and video workflows. With read speeds up to 170MB/s and write speeds up to 90MB/s, it handles rapid burst photography and continuous 4K UHD recording with ease. UHS Speed Class 3 and Video Speed Class 30 certifications guarantee the sustained write performance needed to prevent dropped frames and buffer overflows during critical shoots. The 128GB capacity provides ample room for large RAW image files, extended video clips, and everything in between.

This bundle pairs the Extreme Pro card with an Everything But Stromboli USB 3.0 SD and Micro SD card reader, enabling fast offloading of files without relying on slower camera-to-computer USB connections. The combination is particularly well-suited for photographers using Sony Alpha a7 series bodies, though the card is fully compatible with any device that accepts standard SDXC cards. For professionals who need speed and reliability in the field along with efficient data transfer at the desk, this bundle covers both ends of the workflow.

Key Features

Bundle includes (1) SD Extreme Pro memory card and (1) Everything But Stromboli (TM) 3.0 SD/Micro Card Reader.

Compatible with Sony Alpha a7 III, a7 II, a7, a7s, a7s II Mirrorless Cameras

Can read speeds of up to 170MB/s speed. Write speeds of up to 90MB/s

UHS speed Class 3 (U3) and video speed Class 30 (V30) for 4K UHD video

The card of choice for professionals who need efficiency and speed in post-production

Specifications

Brand

SanDisk

Card Type

SDXC

Capacity

128GB

Read Speed

Up to 170MB/s

Write Speed

Up to 90MB/s

UHS Speed Class

Video Speed Class

V30

Included Accessories

Everything But Stromboli USB 3.0 SD/Micro Card Reader

Compatible Cameras

Sony Alpha a7 III, a7 II, a7, a7S, a7S II (and other SDXC-compatible devices)

Pros & Cons

👍 Pros

Read speeds up to 170MB/s significantly speed up file transfers to a computer
V30 and U3 ratings ensure reliable sustained writes for 4K video recording
Bundle includes a USB 3.0 card reader, eliminating the need to purchase one separately
128GB capacity holds substantial amounts of RAW photos and 4K video footage

👎 Cons

Write speed of 90MB/s may be a bottleneck for cameras with very high burst rates or 8K recording
The bundled Stromboli reader is a third-party accessory and may not match the build quality of name-brand readers
128GB may fill up quickly during extended 4K video sessions without a backup card on hand

Frequently Asked Questions

What read and write speeds can I expect from this card?

The SanDisk Extreme Pro 128GB delivers read speeds up to 170MB/s and write speeds up to 90MB/s, which is sufficient for continuous 4K UHD video recording and burst photography.

What is included in this bundle?

The bundle includes one SanDisk 128GB SDXC Extreme Pro memory card and one Everything But Stromboli USB 3.0 SD/Micro card reader for fast file transfers to your computer.

Is this card compatible with cameras other than Sony Alpha models?

Yes, the SanDisk Extreme Pro SDXC card works with any device that accepts full-size SD cards. The Sony Alpha compatibility is highlighted for this bundle, but the card itself is universally compatible.

What do the U3 and V30 speed class ratings mean?

U3 (UHS Speed Class 3) guarantees a minimum sustained write speed of 30MB/s, and V30 (Video Speed Class 30) confirms the card meets requirements for recording 4K UHD video without dropped frames.