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When you buy a new DS lite some kind of placeholder is sitting in slot 2 of the DS. It appears to have electrical contacts but I can not find any documentation anywhere that says what it does, if anything.Top ViewSide ViewOther side

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It's simply there to plug the port (protect it from dust) when you don't have a GBA game in it. There's no real purpose to it, it just makes the device look more complete, rather than having a huge hole on the bottom.

The Cartridge Slot Cover is a replacement for the one included with your Nintendo DS Lite. The Cartridge Slot Cover is a removable cover that keeps the Game Boy Advance cartridge slot clear from dust and debris when it's not in use. - Nintendo Online Store

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Then why does it have electrical contacts? – Scott Chamberlain May 19 '11 at 2:30
I've wondered that myself. However, even Nintendo themselves state it's just a cover to protect it from dust. (see edit) – Kevin Y May 19 '11 at 2:32
Jeez, Nintendo uses insanely long URLs for their online store pages. – Kevin Y May 19 '11 at 2:35
Perhaps the contacts are there just to give you a hint that it's meant to be connected in the slot. Looking at the board, it doesn't have any real function since they are all floating. Also, it's held in place by putting pressure on them. Perhaps that is the function. – Jeff Mercado May 19 '11 at 2:59
@Scott: Here it is. Just note that this is a replacement cover and not the one that came with the DS. But I don't think there would be any difference any way. – Jeff Mercado May 19 '11 at 6:39

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