Action Replay Max Duo - Nintendo DS & GBA

http://www.retrowarez.com/xxm/dsar.jpg

Retrowarez have let me know they are selling the Action Replay Max Duo for Under 10 pounds (18$), heres the info

Take control of even the toughest games and show ‘em who's boss! Even the odds by arming yourself with infinite health, bullets and time. Unlock secret levels, characters and vehicles. Now YOU can become all-powerful and beat ANY game! Action Replay MAX DUO is already loaded with unauthorized cheats and Powersaves for all the latest and greatest DS and GBA games, and you can update it with new ones quickly and easily using MAX DUO's unique USB Link system.
So what are you waiting for? Action Replay MAX DUO contains everything you need to put the power in your hands today!

Features:

Preloaded with loads of cheats and Powersaves for the latest and greatest games.

New cheats and Powersaves can be easily added and saved via built-in USB Link.

Colorful hi-resolution graphics

More info --> http://www.retrowarez.com/item.asp?dvdId=3703

I own one of these. It sucks for the DS and doesn't work on a Gameboy Micro (GBM).
Have to use my old Gameshark reflashed with Pro Action Replay firmware to get it to work on the GBM....luckily it works with my EFA Linker II plugged into it as well.
All you can do on this hunk of junk is backup your DS gamesaves to the cart or to your PC.
Anyone already running homebrew on an NDS should use ReinMoon instead to backup cart gamesaves.