This adapter will work on Mercedes-Benz cars that have the PCMCIA command system E-Class, C-Class, and S-Class. This is a great solution to upgrade that old technology on your Mercedes-Benz It will allow you to read files from SD cards up to 32GB. You can store up to 10,000 songs on a 32GB SD card and play them directly from the command. Please note that on early command models SD cards can not have a storage capacity of more than 8GB. That’s still a lot of songs. Instead of filling up your iPad or smartphone memory just save all your songs on an SD card and use it with this adapter. Do some more research on this as it may not work on all Mercedes-Benz models.