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Sony MSA512U Memory Stick Micro M2 Adapter

★★★★★1.0 (1 reviews)

A 512MB Memory Stick Micro M2 card for expanding storage on compatible Sony mobile phones and portable devices.

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Overview

The Sony MSA512U is a 512MB Memory Stick Micro (M2) card designed for Sony's proprietary memory card ecosystem. At a fraction of the size of a standard Memory Stick PRO Duo, the M2 format was built specifically for mobile phones and compact portable devices where physical space is at a premium. The card provides 450MB of usable storage after formatting and delivers a minimum write speed of 15 Mbps on compatible devices with 4-pin parallel interfaces, which is sufficient for storing photos, contacts, music files, and small documents.

Built to handle operating temperatures from -25°C to +85°C, the MSA512U is durable enough for everyday carry in a mobile phone across a wide range of environments. It also serves as a convenient file transfer medium between a mobile phone and a computer, provided the computer has an M2-compatible card reader. While the Memory Stick Micro format has been largely displaced by microSD in the broader market, the MSA512U remains a necessary accessory for owners of older Sony Ericsson and Sony devices that exclusively support the M2 format.

Specifications

Capacity
512MB (450MB available)
Format
Memory Stick Micro (M2)
Minimum Write Speed
15 Mbps (on PRO Duo-enabled devices with 4-pin parallel interfaces)
Operating Temperature
-25°C to +85°C
Model Number
MSA512U

Pros & Cons

👍 Pros

  • Ultra-compact M2 form factor fits directly into compatible mobile phones without an adapter
  • Wide operating temperature range of -25°C to +85°C ensures reliability in harsh conditions
  • Provides a simple way to transfer files between a mobile phone and a computer
  • 15 Mbps minimum write speed is adequate for photos, music, and small file storage

👎 Cons

  • 512MB capacity is very limited by modern standards, insufficient for video or large music libraries
  • Memory Stick Micro M2 is a proprietary Sony format with a narrow range of compatible devices
  • Requires a separate adapter to work in full-size Memory Stick PRO Duo slots
  • Has been superseded by microSD, making it relevant only for older Sony hardware

Frequently Asked Questions

It is designed for devices that accept the Memory Stick Micro (M2) format, primarily Sony and Sony Ericsson mobile phones and select portable electronics from that era.
Of the 512MB total capacity, approximately 450MB is available for user storage. The remaining space is used by the card's file system and formatting overhead.
The minimum write speed is 15 Mbps when used in Memory Stick PRO Duo-enabled devices with 4-pin parallel interfaces. Actual speed may vary depending on the host device.
Yes, with a separate M2-to-Memory Stick PRO Duo adapter (not included), you can use this card in devices that accept the larger Memory Stick PRO Duo format.
The MSA512U operates in temperatures from -25°C to +85°C, making it durable enough to handle extreme cold and hot environments.

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