The MEAD-MS01, memory stick adapter, is the first offered by Sony. It is a low-cost alternative to the SxS card. The MEAD-MS01 will work in much the same way as the MxR and SxSxSDHC card adapters.

The EX1 original and EX3 will require a firmware upgrade to work with the MEAD-MS01 and MEAD-SD01 adapters. Additionally Sony has announced that Class10 SDHC cards will be supported with their adapter, but ALL EX cameras (EX1, EX1R, EX3, PMW350) will require a firmware upgrade to use Class 10 cards. The SD adapter will be available in mid-March, and you can look for this firmware upgrade earlier that month. Sony has officially tested and sanctioned the following SanDisk Class 10 cards - DSDX3-032G-A31A for 32GB, SDSDX3-016G-A31A for 16GB, SDSDX3-008G-A31A for 8GB.