SanDisk SDSDQM-004G-B35N 4GB Mobile MicroSDHC Class 4 Memory Card — main product image

SanDisk SDSDQM-004G-B35N 4GB Mobile MicroSDHC Class 4 Memory Card

SanDisk

SanDisk SDSDQM-004G-B35N 4GB Mobile MicroSDHC Class 4 Memory Card

Name: SanDisk SDSDQM-004G-B35N 4GB Mobile MicroSDHC Class 4 Memory Card
Brand: SanDisk
SKU: SDSDQM-004G-B35N

★★★★★3.8 (46 reviews)

Affordable 4GB microSDHC card for basic mobile storage needs, backed by SanDisk reliability and a 5-year warranty.

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Overview

The SanDisk SDSDQM-004G-B35N is a 4GB microSDHC memory card built for basic mobile storage expansion. Rated at Class 4 under the SD 2.0 Specification, it delivers a minimum sustained write speed of 4 MB/s — sufficient for transferring photos, music files, and lightweight documents, though not fast enough for HD video capture or demanding applications. SanDisk has tested this card under extreme conditions, including wide temperature ranges and shock resistance, so it holds up well in everyday use scenarios.

With 4GB of capacity, this card is best positioned as an economical option for older smartphones, basic GPS units, or other devices where storage needs are modest. The 5-year limited warranty adds a layer of assurance for long-term use. However, users with modern devices or heavier media consumption habits will likely find the capacity and speed insufficient, and should consider higher-capacity cards in SanDisk's current lineup.

Key Features

Available capacities: 2 GB, 4 GB, 8 GB, 16 GB, and 32 GB

Seamless speed and performance with microSD/SDHC compatible devices

Class 4 Speed performance rating (based on SD 2.0 Specification)

Tested under the most extreme conditions

5-Year limited warranty

Specifications

Brand

SanDisk

Model

SDSDQM-004G-B35N

Capacity

4GB

Type

MicroSDHC

Speed Class

Class 4 (SD 2.0 Specification)

Warranty

5-Year Limited

Pros & Cons

👍 Pros

Low cost makes it an accessible storage option for budget-conscious buyers.
SanDisk brand reliability with testing under extreme temperature and humidity conditions.
Backed by a 5-year limited warranty for added peace of mind.
Compact microSDHC form factor fits a wide range of mobile devices.

👎 Cons

4GB capacity is very limited by modern standards and fills up quickly with video or apps.
Class 4 speed rating is slow compared to current Class 10, UHS-I, or UHS-II cards.
Not suitable for HD video recording or tasks requiring sustained fast write speeds.
Largely a legacy product, as most current devices expect higher-capacity cards.

Frequently Asked Questions

What speed class is this memory card rated for?

This card carries a Class 4 speed rating based on the SD 2.0 Specification, meaning it supports a minimum write speed of 4 MB/s.

Does this card come with an SD adapter?

The listing is for the microSDHC card itself. Check the specific package variant, as some SanDisk microSD cards include an adapter and some do not.

What types of devices is this card compatible with?

It works with any device that supports microSD or microSDHC cards, including smartphones, tablets, and basic digital cameras.

Is 4GB sufficient for storing music and photos?

At 4GB, you can store roughly 1,000 photos or several hundred songs, making it suitable for light use but limited for video recording or large app libraries.