the different kind of slot 1 cards:this list assembles the clone cards I know of, please keep in mind that there are also clone cards out there which look like the original cards and even use their firmware, they are not listed separately in this compilation.
I also know this listing is not complete, there are more cards out there, but I didn't have the chance to examine them until now, so if you have additional information about other cards, feel welcome to share your research and experience.
this list is exclusively posted to ds-scene.net and gbatemp.net forums, of which I am a member for quite some time now, but didn't post a lot in the past. I felt like it was time to contribute something to these great communities which helped me a lot of times finding answers to my questions.
you may link to this post, but please don't republish it.
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R4 DS and its clones:E7
http://www.dse7.netM3 DS Simply
http://www.m3adapter.comMars
http://www.ndsmars.comN5 DS
http://www.dsn5.comNPlayer
http://www.ndsplayer.comR4 i.L.S. a)
http://www.r4li.netR4 II Upgrade
http://www.r4nds.cnR4 III New Upgrade
http://www.r4dsl.netR4 NDSL Revolution 3 l)
http://www.ndslr4.comR4 SDHC l)
http://www.r4sdhc.comR4i SDHC l)
http://www.r4sdhc.coma) they have also an updated firmware online which works on the original R4 DS
l) these cards come all from the same factory/producer and are more or less identical
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AceKard, AceKard Plus, AceKard R.P.G., AceKard 2, AceKard 2.1, AceKard 2i http://www.acekard.com and their clones:R4 Ultra
http://www.r4ultra.comR4i Advance
http://www.r4i-advance.comR4i Deluxe
http://www.r4deluxe.comR4i Gold b)
http://www.r4ids.comR4i Pro (red label)
http://www.r4ipro.comR4i Super b)
http://www.super4i.comR4i Ultra
http://www.r4ultra.comb) these cards are identical, coming from the same factory
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DSTT, DSTTi http://www.ndstt.com and their clones:CN-DSTT c)
http://www.cndstt.comDSTT Advance m)
http://www.dstt-adv.comDSTTi Upgrade (blue card)
http://www.nds-tti.comM3 Adaptes d)
http://www.m3adaptes.comM3i Upgrade d)
http://www.m3iupgrade.comM3L Upgrade d)
http://www.m3iupgrade.comNeoflash TTDS c)
http://www.neoflash.comR4 III SDHC Upgrade
http://www.r4iiisdhc.comR4 SDHC Upgrade
http://www.r4i-sdhc.comR4 Top
http://r4top.comR4i Gold Pro
http://www.r4-pro.comR4i SDHC Upgrade
http://www.r4i-sdhc.comR4i Upgrade
http://www.ndsr4i.comU2 DS
http://www.u2ds.comc) these cards claim to be original, the fake detector also identifies them as original
d) despite what the card claims, Sakura OS will not work on this card
m) surprise: this card has a better compatibility than the original
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EZ-Flash V, EZ-Flash V New Year Edition, EZ-Flash V Plus, EZ-Flash Vi http://www.ezflash.cn and their clones:R4i f)
http://www.r4i.cnR4i Hyper e)
http://www.hyper4i.come) this card uses a hacked EZ-Flash V 2.0 beta OS
f) not 100% sure if this is an EZ-Flash clone, but has same compatibility like EZ-Flash V
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M3 DS Real, M3i Zero http://www.m3adapter.com and clones:iTouch 2 (M3) (different firmware) g)
http://www.itouchds.comiTouchDS (M3) (different firmware) g)
http://www.itouchds.comM3 Sakura (pink label .jp only) g)
http://www.m3sakura.jpR4 SDHC (M3) (iTouch clone) g)
http://www.r4rts.cnR4i SDHC (M3) (iTouch clone) g)
http://www.r4rts.cnR4i SDHC & RTS (M3) (iTouch clone) g)
http://www.r4rts.cng) all these cards are produced by M3 Adapter team
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N-Card and its clones:DS Fire Link i)
http://www.dsfirelink.comDSLinker Ex h) i)
http://www.dslinker.cnDSLinker h) i)
http://www.dslinker.cnF-Card i)
http://www.dsfirelink.comNeoflash K6 i)
http://www.neoflash.comR4 DS 2GB i)
http:// ?
h) produced by Supercard team
i) all these cards are using the same Firmware and OS as the original N-Card
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Supercard DS One v1, v2, v3, Supercard DS One i http://www.supercard.cniPlayer j)
http://www.dsiplayer.comj) not a real clone, but seems to be produced by Supercard team
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Ninjapass X9TF http://www.ninjapass.com---
CycloDS Evolution http://www.cyclopsds.com and its clones:Edge k)
http://www.edge-ds.cnk) looks like a CycloDS clone without the ingame rts and cheat function
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Neoflash R6 Gold, Neoflash R6 Silver http://www.neoflash.com