最近幫親友找尋Memory Stick 方面的資料, 簡單來說, 受限於FAT16, SE 手機最大支援MS Pro Duo (High Speed) 2GB

Sony Memory Stick Compatibility Chart (http://www.planetmg.com/MSASIA/html/productCompChart/comp_specs_DigiCamera.htm)

P910 Memory Stick
The standard Memory stick Duo has a FAT address bit length for up to 128 MB address space.
The PRO Memory stick has a FAT address bit length for up to 4 GB address space.
Sony Ericsson P910 supports (4 GB). However, due to performance issues (1 GB) is stated as the max size.

File system support on the Memory Stick (K750/P800/P900/P910/S700i/V800/Z800/Z1010)
The Sony Ericsson K750/S700i/P800/P900/P910i/V800/Z800i/Z1010 can currently only use file system FAT16 on the Memory Stick. The file system FAT16 can support sizes up to 2 GB.

Which is the maximum compatible memory stick for the phone (P910 series)
The Sony Ericsson P910i supports up to 2GB memory stick.

贊助商連結

http://www.memorystick.com/en/index.html

Memory Stick Compatibility Chart - Sony Asia Pacific Support Website (http://www.css.ap.sony.com/consumer/template/UIDetails.aspx?Id=36065)

補充:
Sony Asia Pacific 線上支援 - 記憶卡相容性說明 (http://www.twsupport.css.ap.sony.com/consumer/template/UIDetails.aspx?Id=43969)