While the whole build is impressive, the most clever part involves a 3 1/2″ floppy disk that hides an SD card and works like a regular USB flash drive when inserted into the floppy drive.

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Eleanor Ford and Justin Krajeski After a new round of testing, the Lexar ...

An SD card is just like a small hard drive — it's a device that can store and transport large amounts of data. If you've been using an SD card for a long time, you might need to clear it out.

That same community happens to be buzzing right now with news that well-known Dreamcast hacker [Ian Micheal] has figured out how to cache data to an SD card via the console’s serial port.

If you have an older device that uses a standard (larger) SD slot, there's no need to fret! Each of these Sonic the Hedgehog PRO Plus microSDXC cards comes with an SD to microSD adapter.