Lexar Muse Ultra-Slim Portable SSD Review: The Ultimate Portable Choice at Under 4mm Thick

A New Form Factor in Mobile Storage

In the competitive landscape of mobile storage devices, capacity and speed have long been the core metrics manufacturers focus on. Recently, however, a group of manufacturers has shifted toward a different dimension—extreme thinness. Following brands like Xteink, major storage manufacturer Lexar has joined this race by launching its thinnest portable solid-state drive yet: the Lexar Muse Ultra-Slim Portable SSD.

According to official announcements, this ultra-slim portable SSD is expected to launch later this year, available in 512GB and 1TB capacity options. Its most striking feature is its astonishing body thickness—under 4mm at its thickest point, placing it among the thinnest portable SSDs currently on the market.

Design Tradeoffs for Extreme Thinness

You may not have noticed, but to compress the body to such a slim profile, Lexar made a somewhat controversial design choice: eliminating the built-in USB-C port.

This approach aligns with the strategy pioneered by Xteink and others. Traditional portable SSDs struggle to slim down further largely due to the physical height of the USB-C port itself—the metal housing and internal pin structure set a lower limit on body thickness. When manufacturers decide to sacrifice this standard port, body thickness can achieve breakthrough reductions.

For consumers, this tradeoff means a change in usage: rather than direct plug-and-play connectivity, users must rely on specific connection solutions (such as built-in or included cables/adapters). While this enhances portability, it may also introduce some inconvenience and risk of losing cables.

Industry Trends Behind Ultra-Slim Portable SSDs

From Performance Race to Form Factor Innovation

After years of development, the portable SSD market has seen mainstream products generally reach high read/write speeds under USB 3.2 or even Thunderbolt protocols, with capacities covering a wide range from hundreds of gigabytes to multiple terabytes. As performance and capacity gradually become commoditized, manufacturers are seeking new differentiation directions, with design and portability becoming the new battleground.

The emergence of the Lexar Muse directly reflects the trend toward slimmer mobile storage. A thickness under 4mm means it can slip into a wallet, behind a phone case, or even a shirt pocket like a card, greatly expanding the usage scenarios for mobile storage. For creators, photographers, and business professionals who frequently transfer large files between devices, this "effortless carry" experience holds considerable appeal.

The Challenge of Balancing Portability and Practicality

However, excessive pursuit of thinness brings new challenges. After abandoning the USB-C port, the device's plug-and-play convenience decreases. Additionally, ultra-slim bodies typically face greater heat dissipation challenges—solid-state drives generate considerable heat during sustained high-speed read/write operations, and a thinner body means less surface area for heat dissipation, potentially affecting sustained performance and stability.

Therefore, these ultra-slim portable SSDs are better suited for users who prioritize daily portability and moderate transfer intensity, rather than professional workflows requiring extended high-load read/write operations.

Key Questions About the Lexar Muse

Currently, official information remains limited, and the following key questions await answers when the product officially launches:

• Actual transfer speeds: After abandoning the standard USB-C port, what connection solution is adopted, and can it guarantee sufficient bandwidth? This will directly impact daily usage experience.
• Pricing strategy: As a product emphasizing design differentiation, will it be priced higher than regular portable SSDs of the same capacity, and how will its value proposition compare?
• Compatibility and accessories: Is the connection solution compatible with mainstream phones, tablets, and computers? Are included accessories comprehensive? Can replacement accessories be easily purchased separately later?

Conclusion

The launch of the Lexar Muse ultra-slim portable SSD marks mobile storage's evolution from a pure "performance and capacity" race toward a more diversified "form factor and experience" direction. A thickness under 4mm is undoubtedly an eye-catching selling point, but the tradeoff of eliminating the USB-C port reminds us that any extreme design comes with compromises. Whether this product can truly appeal to portability-focused users will need to be verified by its actual performance after official launch.