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The silver Action Replay Max Duo for GBA & DS is the newest version of the GBA Action Replay. These will fit and work on a GBA SP and DS Lite consoles. You can add codes manually or by using an USB cable and downloading codes from a PC. This device is only for use with GBA games only! Some people confused get confused when they see the "DS" stamped on the device and think DS games are supported, that's wrong. You can find codes for most GBA games by Googling, Action Replay GBA codes rather easily. This device is a big improvement over the older, Action Replay GBA(Red Label) version. They're built solidly, like a tank if you know what I mean. These are rare, hard to find and can be quite costly. If you can find one at a fair price, do so. They are definitely worth the money.