Sony MSA1GD 1 GB Memory Stick Micro (M2)

The Sony MSA1GD Memory Stick Micro (M2) is one of the smallest removable storage cards Sony produced, designed for an era when portable audio players, feature phones, and compact cameras needed tiny, low-power media. At just 1GB, the card holds a modest amount of photos, music files, or documents—sufficient for the lightweight file needs of compatible legacy devices. Its dual operating voltage of 1.8V and 3.3V allows it to function in low-power mobile handsets as well as in devices built around the standard Memory Stick PRO interface.

Sony includes a Memory Stick PRO adapter in the box, which lets you slot the M2 card into any full-size Memory Stick PRO reader or device for easy file transfer. The card's waterproof rating adds a measure of durability that protects data if the card encounters moisture. For anyone maintaining or still using older Sony hardware that requires the M2 format, this card provides a straightforward, reliable storage solution—though its proprietary format and small capacity mean it serves a niche audience today.