Sony MSA512D 512MB Memory Stick Micro M2

Name: Sony MSA512D 512MB Memory Stick Micro M2
Brand: Sony
SKU: MSA512D

Overview

The Sony MSA512D is a 512MB Memory Stick Micro (M2) card designed for Sony's ecosystem of mobile phones, portable audio devices, and compact digital cameras that accept the M2 format. Physically, it is one of the smallest flash memory cards ever produced, measuring just a fraction of the size of a standard SD card, which allowed Sony to fit expandable storage into ultra-thin phone designs and miniaturized media players. The dual operating voltage — 1.8V for low-power mobile chipsets and 3.3V for standard Memory Stick PRO hardware — means a single card can move between a Sony phone and a PSP or older Cyber-shot camera without compatibility issues.

Sony includes a Memory Stick PRO adapter in the box, so the M2 card slides into any full-size Memory Stick PRO slot, extending its usefulness to laptops, card readers, and other devices with that larger slot. However, the M2 format is proprietary to Sony, and with the broader industry having standardized on microSD, this card is primarily relevant as a replacement or spare for existing Sony devices that require it. At 512MB, storage is modest — enough for a few hundred photos at lower resolutions or a small music library — but for the specific hardware it was built to serve, the MSA512D provides a reliable and correctly formatted storage solution.

Key Features

Ultra small size

512 MB storage capacity

Dual Operating Voltage (1.8V and 3.3V) supports cell phones and Memory Stick PRO hardware

Memory Stick PRO adapter supplied

Designed for use with cell phones, portable audio devices, and compact digital photography

Specifications

Capacity

512MB

Form Factor

Memory Stick Micro (M2)

Operating Voltage

Dual: 1.8V and 3.3V

Included Adapter

Memory Stick PRO Adapter

Compatible Devices

Sony Mobile Phones, Portable Audio Players, Compact Digital Cameras

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Pros & Cons

👍 Pros

Extremely small form factor fits into slim Sony phones and portable audio players where larger cards cannot.
Dual 1.8V/3.3V operation provides compatibility across both mobile and standard Memory Stick PRO devices.
Included Memory Stick PRO adapter lets you use the card in full-size Memory Stick slots without a separate purchase.
Straightforward plug-and-play operation with compatible Sony hardware.

👎 Cons

512MB capacity is extremely limited by modern standards, holding only a small number of photos or songs.
Memory Stick Micro is a proprietary Sony format with very limited device compatibility outside the Sony ecosystem.
Transfer speeds are significantly slower than current microSD or other modern flash storage standards.
The format has been discontinued, making replacement or additional cards increasingly difficult to find.
Not compatible with SD or microSD card slots without a specialty adapter.

Frequently Asked Questions

What devices is the Memory Stick Micro (M2) format compatible with?

The M2 format was designed for Sony mobile phones, portable audio players like Walkman devices, and select compact Sony digital cameras. Check your device's manual to confirm it accepts Memory Stick Micro cards.

What does "dual operating voltage" mean for this card?

The card operates at both 1.8V and 3.3V, which means it works in low-power mobile devices that use 1.8V as well as older Memory Stick PRO–compatible hardware that runs at 3.3V — no separate adapter electronics are needed to switch between them.

Is the Memory Stick PRO adapter included?

Yes, Sony includes a Memory Stick PRO adapter in the package, allowing you to insert the tiny M2 card into any full-size Memory Stick PRO slot.

Can this card be used in non-Sony devices?

Generally no. Memory Stick Micro is a Sony proprietary format and is not compatible with SD, microSD, or CompactFlash card slots. You would need a dedicated M2-to-other-format adapter, which is rare.