M2 with Adapter Memory Stick Micro into Memory Stick Pro Duo 512MB 1GB 2GB 4GB 8GB MS PRO DUO - AliExpress
Amazon.com: PSP Memory Stick Adapter, Funturbo Micro SD to Memory Stick PRO Duo MagicGate Card for Sony Playstation Portable, Camera, Handycam : Electronics
SanDisk 2GB Memory Stick Micro (M2) w/ to standard MS Pro Duo adapter | eBay