All modern keyboards now come with the expansion memory already installed so there is no need for additional hardware. Some of the older Yamaha keyboards like Tyros 3, Tyros 4 and Tyros 5 were shipped without any expansion memory, therefore the user should verify if the expansion memory is installed before making a purchase.

All Yamaha Tyros 3 and Tyros 4 keyboards have a user memory of 4mb and 6mb respectively, therefore some small custom voice or drum kit could be loaded, however memory expansion should be installed for a complete experience with our custom voices and drum kits.