So, I just received one from nds-card.com. I don't yet have an SD for it, but I went to test it to see if it appeared in the menu, it doesn't. Not on my 2DS, 3DS, DSi or DSlite. Sooooooo. Is it broken? Is it one of those that autoboots on DSlite? I own an R4 Ultra SDHC that does just that on my DSlite, but that one works just fine.