SDSQXFN-512G-GN4NN

Overview

The SanDisk Express 512GB microSDXC Card delivers next-generation storage performance for compatible cameras, handheld gaming devices and other high-speed devices. Using a PCIe Gen 3-NVMe interface, it provides sequential read speeds of up to 880MB/s and write speeds of up to 650MB/s, giving users faster file transfers, quicker game loading and efficient handling of high-resolution content.

Description

The SanDisk microSD Express 512GB card is designed for users who need more than traditional microSD UHS-I performance. Its PCIe Gen 3-NVMe interface enables significantly higher transfer speeds, while backwards compatibility with microSD UHS-I devices makes it suitable for current equipment as well as emerging high-speed devices.

With support for up to 5.3K video capture today and the potential to support up to 8K video in compatible future devices, this high-capacity memory card is well suited to creators, photographers and gamers. SanDisk ThermAdapt technology provides adaptive thermal management to help keep operating temperatures within reliable limits during demanding workloads.

Features

Fast microSD Express Performance
With sequential read speeds of up to 880MB/s and write speeds of up to 650MB/s, the card can dramatically reduce transfer and loading times compared with conventional microSD UHS-I cards. Sustained write performance can reach up to 220MB/s, making it suitable for demanding data-intensive applications.

The PCIe Gen 3-NVMe interface provides the bandwidth needed for next-generation storage performance, while the standard microSD UHS-I interface maintains compatibility with a broad range of existing devices.

Ideal for Handheld Gaming
The SanDisk Express 512GB microSDXC card is designed to help reduce game loading times on compatible handheld gaming devices. Faster read performance allows games and other large files to load more quickly, contributing to a smoother gaming experience.

The 512GB capacity also provides plenty of room for large game libraries, downloadable content, applications and media without constantly having to remove older files.

Built for High-Resolution Content
For photographers and video creators, fast storage is particularly useful when working with large files. The card supports up to 5.3K video capture in compatible devices and is designed with future high-resolution applications in mind.

When used with a compatible SanDisk PRO-READER SD Express Dual Card, sold separately, supported microSD Express cards can achieve very high transfer speeds for quickly moving large video and image collections to a computer.

Reliable Storage for Everyday Use
The card is engineered for use in demanding environments and is designed to provide protection against a range of common hazards. It is waterproof, temperature-proof, humidity-proof, drop-proof, shock-proof, magnetic-proof and X-ray proof, while also being designed to withstand normal wear over its service life.

Thermal Management for High-Speed Operation
High-speed storage can generate additional heat during intensive transfers. SanDisk ThermAdapt technology combines a specially designed enclosure with adaptive thermal control to help manage heat generated during operation. This helps maintain reliable performance when the card is handling demanding workloads.

Key Technical Details

• Capacity: 512GB
• Form factor: microSDXC
• Sequential read speed: Up to 880MB/s
• Sequential write speed: Up to 650MB/s
• Sustained write speed: Up to 220MB/s
• Interface: PCIe Gen 3-NVMe with microSD UHS-I compatibility
• Video support: Up to 5.3K video capture in compatible devices
• Intended uses: Handheld gaming, photography, video recording and high-speed file transfers
• Thermal management: SanDisk ThermAdapt technology
• Protection: Waterproof, temperature-proof, humidity-proof, drop-proof, shock-proof, magnetic-proof and X-ray proof

512GB Capacity for Games and Media
The 512GB storage capacity gives users substantial space for games, photographs, video recordings and other large files. Combined with the high-speed interface, it provides a practical storage upgrade for compatible handheld gaming devices and creator-focused equipment.

For ordering and product identification, the SanDisk microSD Express 512GB card uses part number / SKU SDSQXFN-512G-GN4NN.

A Next-Generation microSD Card
SanDisk microSD Express technology is designed for the growing demand for faster portable storage. With PCIe Gen 3-NVMe performance, high sequential read and write speeds, 512GB of storage and backwards compatibility with microSD UHS-I devices, this card offers a balance of current compatibility and next-generation performance.

Whether you need faster game loading, quicker media transfers or high-speed storage for demanding creative workflows, the SanDisk Express 512GB microSDXC Card provides the capacity and performance required by modern devices.

Specifications

©2026 Respective owners and brand holders. This table has been carefully researched and generated by ComXpert International CC (//www.comx-computers.co.za), however, errors and omissions may occur. Only references to South Africa apply. All products are sourced in South Africa from the official suppliers and the warranty is that of the local supplier. E&OE. This table and our site's content may be used on condition that this notice and link remains intact and unaltered.
Specifications
Product Code	SDSQXFN-512G-GN4NN
Capacity	512GB
Form Factor	microSDXC
Sequential Read Performance	Up to 880MB/s
Sequential Write Performance	Up to 650MB/s
Dimensions (L x W x H)	0.59" x 0.43" x 0.04"
Weight	0.26gms
Model Number	SDSQXFN-512G-GN4NN
Operating Temperature	-13degreesF to 185degreesF
Non-Operating Temperature	-40degreesF to 185degreesF
Product Features	Ready for future superspeed products with a PCIe NVMe interface and UHS-I speeds
	Up to 3.5 times faster read speeds than our fastest microSD UHS-I cards
	Waterproof, temperature-proof, humidity-proof, drop-proof, shock-proof, magnetic-proof, x-ray proof, and wear-out proof
In The Box	SANDISK microSD Express Card
Compatibility	Devices that include a microSDXC slot, including Android smartphones and tablets, action cams, drones, handheld gaming devices, and laptops.
	Devices that include microSD Express, microSD UHS-I, and microSD UHS-II slots.
	Performs at microSD UHS-I speeds when used with microSD UHS-I and microSD UHS-II devices.