its definetly a fake and yes you will be dissapointed
I have a "legit r4ds and it was great until i learned more about flash cards and all the cool stuff they can do. the first problem with my r4 was it could only hold 2gb. so i only had 4 games on at a time and about to songs and a few homebrew apps that was it then later i found out the r4ds dosen't get updated anymore which suks so about 2 weeks ago i spent the 50$ and got myself a cyclo ds evolution i have a 4gb sdhc card in it. it has over 35 ds games, and 220 songs! plus a ton of homebrew apps more than i could ever put on my r4ds and i actually have ironman the movie the whole movie. plus it has a ton of more features like the in game menu and much more that i can't get into right now but it is the best flashcard out there.
o and about your flashcard . . .
yours isn't made by the r4 team
i think that the clone r4ds is sdhc memory card compatible so it can hold up to 32 gb. but if all your looking for is to play nds games and have pretty much no other features (which you will probobly later TRUST ME) then the clone should be fine.
in my opinion don't get the r4 clone and also don't get the edge card many people say its a knock off cyclo (but its not a clone or fake)
if you were to get another flash card i would go with either an acekard 2 (or 2i if you were thinking of getting the dsi) or the cyclods evolution