The Flash Advance Xtreme 512m can hold as many as sixteen Gameboy Advance games at one time. It supports SRAM saving, which means a battery keeps the saves on the cart.
You flash, or transfer, .gba rom files to-and-from your PC by using the included USB cable (or a seperate 25-pin parallel cable with a power supply) to connect the Xtreme linker to the computer.
The included Xtremelink v1.25 software lets you back-up and store your original GBA cartridges as a .gba rom file on your PC. You can then transfet these .gba rom files onto the Flash Advance Xtreme cartridge.
Use the links on the right to learn more about Xtremelink v1.25.