What's the Everdrive?
The Everdrive is capable of running games, software and even music tracks from a SD card. Basically this is a SD card to classic console adapter.
Filing SD card slots in the cartridge shell has been the traditional method. You can view my old article here on filing slots on NES shells here. I have since discovered a much easier way to use the SNES everdrive and this will work for many other flash carts as well.
SNES Instructions: (For NES Scroll to Bottom)
There is a small micro SD adapter on the market made for Macbook Air laptops. It's half the height of standard SD cards and perfect for this project. There are several variations on the market, purchase the one that matches my photo.
With the SNES Everdrive the adapter fits perfectly. No drilling,filing or hacking required!
NES EverDrive N8 Method (For Mad Scientist Only)
Honestly this requires simple modification to the SD adapter but I do not consider this practical for some. Follow the photo guide at your own risk.
To remove the SD card, find a small device like a toothpick or jewelers screwdriver and push the SD card down. This will initiate the eject mechanism.