What is this long black Nintendo DS thing?
I can't seem to figure out what this is. I know at one point I bought it at one point because I needed it for something but I can't really remember but I know it was important. It looks like a cartridge extender or something. I haven't seen it in about four years so I honestly can't remember. I tried searching on Google but I didn't have any luck. It sort of looks like an adapter but this is for the DS Lite so I don't know what it'd be adapting.
Edit: I did a search for ROM/flash cards and I can't seem to find anything thats what I have. Just R4 cards.
Edit: here's an image I found which appears to have what I have. It's apparently a ROM/homebrew thing. I do remember getting it at Gamestop so I don't know why I got it: 
And here's what I have
Best Answer
It looks very much like the Action Replay unit for DS and DS Lite:
There's a Wikipedia article about the action replay series.
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What is the big slot for the DS?
It's officially called SLOT-2 if memory serves. It is used for Game Boy Advance games and as an expansion slot for certain software.What does DS mean on Nintendo DS?
The previous family of handheld game consoles from Nintendo. Introduced in 2004 and featuring dual screens (the "DS"), the top screen was the game screen while the bottom touchscreen was used to make selections. The DS was followed by the DS Lite, DSi, DSi XL and the 3DS.What is the old DS called?
Nintendo DS Line The original grey Nintendo DS. The Nintendo DS first came out in North America on November 21, 2004 and was the first handheld to have a main menu. Although it was a very basic console only pre-installed with PictoChat and DS Download Play, it was still a huge success.What is the cartridge in the DS Lite?
The Nintendo DS Lite is a dual-screen handheld game console developed and manufactured by Nintendo....Nintendo DS Lite.A black Nintendo DS LiteMediaGame Boy Advance Game Pak Nintendo DS Game CardCPU67 MHz ARM9 and 33 MHz ARM7StorageCartridge save, 4 MB RAM, 256 KB flash memory17 more rowsNintendo DS Lite Black
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Answer 2
Looks like an adapter for microSD used for playing pirated or ROM dumped games.
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