M2 Card

An M2 Card, or Memory Stick Micro 2 is a lightweight, portable memory storage device created as a joint venture between Sony and Sandisk, used primarily for Sony Ericsson mobile phones until 2009. The maximum capacity currently available is 16GB with a theoretical maximum of 32GB, although the Memory Stick XC-HG Micro specification allows a theoretical maximum capacity of 2TB.

Currently, the only video game console that makes use of M2 Cards is the PlayStation Portable Go.